19755440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{317}}^1$

素因数の和:390

約数の個数: 80

約数和(自身を含む): 49684320

約数和(自身を除く): 29928880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 41, 76, 80, 82, 95, 152, 164, 190, 205, 304, 317, 328, 380, 410, 634, 656, 760, 779, 820, 1268, 1520, 1558, 1585, 1640, 2536, 3116, 3170, 3280, 3895, 5072, 6023, 6232, 6340, 7790, 12046, 12464, 12680, 12997, 15580, 24092, 25360, 25994, 30115, 31160, 48184, 51988, 60230, 62320, 64985, 96368, 103976, 120460, 129970, 207952, 240920, 246943, 259940, 481840, 493886, 519880, 987772, 1039760, 1234715, 1975544, 2469430, 3951088, 4938860, 9877720, 19755440]

約数ペア:

[(1, 19755440), (2, 9877720), (4, 4938860), (5, 3951088), (8, 2469430), (10, 1975544), (16, 1234715), (19, 1039760), (20, 987772), (38, 519880), (40, 493886), (41, 481840), (76, 259940), (80, 246943), (82, 240920), (95, 207952), (152, 129970), (164, 120460), (190, 103976), (205, 96368), (304, 64985), (317, 62320), (328, 60230), (380, 51988), (410, 48184), (634, 31160), (656, 30115), (760, 25994), (779, 25360), (820, 24092), (1268, 15580), (1520, 12997), (1558, 12680), (1585, 12464), (1640, 12046), (2536, 7790), (3116, 6340), (3170, 6232), (3280, 6023), (3895, 5072)]