129438640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:171

約数の個数: 160

約数和(自身を含む): 339978240

約数和(自身を除く): 210539600

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 41, 62, 67, 76, 80, 82, 95, 124, 134, 152, 155, 164, 190, 205, 248, 268, 304, 310, 328, 335, 380, 410, 496, 536, 589, 620, 656, 670, 760, 779, 820, 1072, 1178, 1240, 1271, 1273, 1340, 1520, 1558, 1640, 2077, 2356, 2480, 2542, 2546, 2680, 2747, 2945, 3116, 3280, 3895, 4154, 4712, 5084, 5092, 5360, 5494, 5890, 6232, 6355, 6365, 7790, 8308, 9424, 10168, 10184, 10385, 10988, 11780, 12464, 12710, 12730, 13735, 15580, 16616, 20336, 20368, 20770, 21976, 23560, 24149, 25420, 25460, 27470, 31160, 33232, 39463, 41540, 43952, 47120, 48298, 50840, 50920, 52193, 54940, 62320, 78926, 83080, 85157, 96596, 101680, 101840, 104386, 109880, 120745, 157852, 166160, 170314, 193192, 197315, 208772, 219760, 241490, 260965, 315704, 340628, 386384, 394630, 417544, 425785, 482980, 521930, 631408, 681256, 789260, 835088, 851570, 965960, 1043860, 1362512, 1578520, 1617983, 1703140, 1931920, 2087720, 3157040, 3235966, 3406280, 4175440, 6471932, 6812560, 8089915, 12943864, 16179830, 25887728, 32359660, 64719320, 129438640]

約数ペア:

[(1, 129438640), (2, 64719320), (4, 32359660), (5, 25887728), (8, 16179830), (10, 12943864), (16, 8089915), (19, 6812560), (20, 6471932), (31, 4175440), (38, 3406280), (40, 3235966), (41, 3157040), (62, 2087720), (67, 1931920), (76, 1703140), (80, 1617983), (82, 1578520), (95, 1362512), (124, 1043860), (134, 965960), (152, 851570), (155, 835088), (164, 789260), (190, 681256), (205, 631408), (248, 521930), (268, 482980), (304, 425785), (310, 417544), (328, 394630), (335, 386384), (380, 340628), (410, 315704), (496, 260965), (536, 241490), (589, 219760), (620, 208772), (656, 197315), (670, 193192), (760, 170314), (779, 166160), (820, 157852), (1072, 120745), (1178, 109880), (1240, 104386), (1271, 101840), (1273, 101680), (1340, 96596), (1520, 85157), (1558, 83080), (1640, 78926), (2077, 62320), (2356, 54940), (2480, 52193), (2542, 50920), (2546, 50840), (2680, 48298), (2747, 47120), (2945, 43952), (3116, 41540), (3280, 39463), (3895, 33232), (4154, 31160), (4712, 27470), (5084, 25460), (5092, 25420), (5360, 24149), (5494, 23560), (5890, 21976), (6232, 20770), (6355, 20368), (6365, 20336), (7790, 16616), (8308, 15580), (9424, 13735), (10168, 12730), (10184, 12710), (10385, 12464), (10988, 11780)]