16565720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:408

約数の個数: 64

約数和(自身を含む): 39916800

約数和(自身を除く): 23351080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 71, 76, 95, 142, 152, 190, 284, 307, 355, 380, 568, 614, 710, 760, 1228, 1349, 1420, 1535, 2456, 2698, 2840, 3070, 5396, 5833, 6140, 6745, 10792, 11666, 12280, 13490, 21797, 23332, 26980, 29165, 43594, 46664, 53960, 58330, 87188, 108985, 116660, 174376, 217970, 233320, 414143, 435940, 828286, 871880, 1656572, 2070715, 3313144, 4141430, 8282860, 16565720]

約数ペア:

[(1, 16565720), (2, 8282860), (4, 4141430), (5, 3313144), (8, 2070715), (10, 1656572), (19, 871880), (20, 828286), (38, 435940), (40, 414143), (71, 233320), (76, 217970), (95, 174376), (142, 116660), (152, 108985), (190, 87188), (284, 58330), (307, 53960), (355, 46664), (380, 43594), (568, 29165), (614, 26980), (710, 23332), (760, 21797), (1228, 13490), (1349, 12280), (1420, 11666), (1535, 10792), (2456, 6745), (2698, 6140), (2840, 5833), (3070, 5396)]