19977360

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{337}}^1$

素因数の和:385

約数の個数: 160

約数和(自身を含む): 70412160

約数和(自身を除く): 50434800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 19, 20, 24, 26, 30, 38, 39, 40, 48, 52, 57, 60, 65, 76, 78, 80, 95, 104, 114, 120, 130, 152, 156, 190, 195, 208, 228, 240, 247, 260, 285, 304, 312, 337, 380, 390, 456, 494, 520, 570, 624, 674, 741, 760, 780, 912, 988, 1011, 1040, 1140, 1235, 1348, 1482, 1520, 1560, 1685, 1976, 2022, 2280, 2470, 2696, 2964, 3120, 3370, 3705, 3952, 4044, 4381, 4560, 4940, 5055, 5392, 5928, 6403, 6740, 7410, 8088, 8762, 9880, 10110, 11856, 12806, 13143, 13480, 14820, 16176, 17524, 19209, 19760, 20220, 21905, 25612, 26286, 26960, 29640, 32015, 35048, 38418, 40440, 43810, 51224, 52572, 59280, 64030, 65715, 70096, 76836, 80880, 83239, 87620, 96045, 102448, 105144, 128060, 131430, 153672, 166478, 175240, 192090, 210288, 249717, 256120, 262860, 307344, 332956, 350480, 384180, 416195, 499434, 512240, 525720, 665912, 768360, 832390, 998868, 1051440, 1248585, 1331824, 1536720, 1664780, 1997736, 2497170, 3329560, 3995472, 4994340, 6659120, 9988680, 19977360]

約数ペア:

[(1, 19977360), (2, 9988680), (3, 6659120), (4, 4994340), (5, 3995472), (6, 3329560), (8, 2497170), (10, 1997736), (12, 1664780), (13, 1536720), (15, 1331824), (16, 1248585), (19, 1051440), (20, 998868), (24, 832390), (26, 768360), (30, 665912), (38, 525720), (39, 512240), (40, 499434), (48, 416195), (52, 384180), (57, 350480), (60, 332956), (65, 307344), (76, 262860), (78, 256120), (80, 249717), (95, 210288), (104, 192090), (114, 175240), (120, 166478), (130, 153672), (152, 131430), (156, 128060), (190, 105144), (195, 102448), (208, 96045), (228, 87620), (240, 83239), (247, 80880), (260, 76836), (285, 70096), (304, 65715), (312, 64030), (337, 59280), (380, 52572), (390, 51224), (456, 43810), (494, 40440), (520, 38418), (570, 35048), (624, 32015), (674, 29640), (741, 26960), (760, 26286), (780, 25612), (912, 21905), (988, 20220), (1011, 19760), (1040, 19209), (1140, 17524), (1235, 16176), (1348, 14820), (1482, 13480), (1520, 13143), (1560, 12806), (1685, 11856), (1976, 10110), (2022, 9880), (2280, 8762), (2470, 8088), (2696, 7410), (2964, 6740), (3120, 6403), (3370, 5928), (3705, 5392), (3952, 5055), (4044, 4940), (4381, 4560)]