20359960

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 47589120

約数和(自身を除く): 27229160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 71, 107, 134, 142, 214, 268, 284, 335, 355, 428, 535, 536, 568, 670, 710, 856, 1070, 1340, 1420, 2140, 2680, 2840, 4280, 4757, 7169, 7597, 9514, 14338, 15194, 19028, 23785, 28676, 30388, 35845, 37985, 38056, 47570, 57352, 60776, 71690, 75970, 95140, 143380, 151940, 190280, 286760, 303880, 508999, 1017998, 2035996, 2544995, 4071992, 5089990, 10179980, 20359960]

約数ペア:

[(1, 20359960), (2, 10179980), (4, 5089990), (5, 4071992), (8, 2544995), (10, 2035996), (20, 1017998), (40, 508999), (67, 303880), (71, 286760), (107, 190280), (134, 151940), (142, 143380), (214, 95140), (268, 75970), (284, 71690), (335, 60776), (355, 57352), (428, 47570), (535, 38056), (536, 37985), (568, 35845), (670, 30388), (710, 28676), (856, 23785), (1070, 19028), (1340, 15194), (1420, 14338), (2140, 9514), (2680, 7597), (2840, 7169), (4280, 4757)]