398823680

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{31}}^1$

素因数の和:117

約数の個数: 216

約数和(自身を含む): 1085118720

約数和(自身を除く): 686295040

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 31, 32, 38, 40, 46, 62, 64, 76, 80, 92, 95, 115, 124, 128, 152, 155, 160, 184, 190, 230, 248, 256, 304, 310, 320, 368, 380, 437, 460, 496, 529, 589, 608, 620, 640, 713, 736, 760, 874, 920, 992, 1058, 1178, 1216, 1240, 1280, 1426, 1472, 1520, 1748, 1840, 1984, 2116, 2185, 2356, 2432, 2480, 2645, 2852, 2944, 2945, 3040, 3496, 3565, 3680, 3968, 4232, 4370, 4712, 4864, 4960, 5290, 5704, 5888, 5890, 6080, 6992, 7130, 7360, 7936, 8464, 8740, 9424, 9920, 10051, 10580, 11408, 11780, 12160, 13547, 13984, 14260, 14720, 16399, 16928, 17480, 18848, 19840, 20102, 21160, 22816, 23560, 24320, 27094, 27968, 28520, 29440, 32798, 33856, 34960, 37696, 39680, 40204, 42320, 45632, 47120, 50255, 54188, 55936, 57040, 65596, 67712, 67735, 69920, 75392, 80408, 81995, 84640, 91264, 94240, 100510, 108376, 111872, 114080, 131192, 135424, 135470, 139840, 150784, 160816, 163990, 169280, 182528, 188480, 201020, 216752, 228160, 262384, 270940, 279680, 311581, 321632, 327980, 338560, 376960, 402040, 433504, 456320, 524768, 541880, 559360, 623162, 643264, 655960, 677120, 753920, 804080, 867008, 912640, 1049536, 1083760, 1246324, 1286528, 1311920, 1557905, 1608160, 1734016, 2099072, 2167520, 2492648, 2573056, 2623840, 3115810, 3216320, 3468032, 4198144, 4335040, 4985296, 5247680, 6231620, 6432640, 8670080, 9970592, 10495360, 12463240, 12865280, 17340160, 19941184, 20990720, 24926480, 39882368, 49852960, 79764736, 99705920, 199411840, 398823680]

約数ペア:

[(1, 398823680), (2, 199411840), (4, 99705920), (5, 79764736), (8, 49852960), (10, 39882368), (16, 24926480), (19, 20990720), (20, 19941184), (23, 17340160), (31, 12865280), (32, 12463240), (38, 10495360), (40, 9970592), (46, 8670080), (62, 6432640), (64, 6231620), (76, 5247680), (80, 4985296), (92, 4335040), (95, 4198144), (115, 3468032), (124, 3216320), (128, 3115810), (152, 2623840), (155, 2573056), (160, 2492648), (184, 2167520), (190, 2099072), (230, 1734016), (248, 1608160), (256, 1557905), (304, 1311920), (310, 1286528), (320, 1246324), (368, 1083760), (380, 1049536), (437, 912640), (460, 867008), (496, 804080), (529, 753920), (589, 677120), (608, 655960), (620, 643264), (640, 623162), (713, 559360), (736, 541880), (760, 524768), (874, 456320), (920, 433504), (992, 402040), (1058, 376960), (1178, 338560), (1216, 327980), (1240, 321632), (1280, 311581), (1426, 279680), (1472, 270940), (1520, 262384), (1748, 228160), (1840, 216752), (1984, 201020), (2116, 188480), (2185, 182528), (2356, 169280), (2432, 163990), (2480, 160816), (2645, 150784), (2852, 139840), (2944, 135470), (2945, 135424), (3040, 131192), (3496, 114080), (3565, 111872), (3680, 108376), (3968, 100510), (4232, 94240), (4370, 91264), (4712, 84640), (4864, 81995), (4960, 80408), (5290, 75392), (5704, 69920), (5888, 67735), (5890, 67712), (6080, 65596), (6992, 57040), (7130, 55936), (7360, 54188), (7936, 50255), (8464, 47120), (8740, 45632), (9424, 42320), (9920, 40204), (10051, 39680), (10580, 37696), (11408, 34960), (11780, 33856), (12160, 32798), (13547, 29440), (13984, 28520), (14260, 27968), (14720, 27094), (16399, 24320), (16928, 23560), (17480, 22816), (18848, 21160), (19840, 20102)]