13122920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{557}}^1$

素因数の和:618

約数の個数: 64

約数和(自身を含む): 32140800

約数和(自身を除く): 19017880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 31, 38, 40, 62, 76, 95, 124, 152, 155, 190, 248, 310, 380, 557, 589, 620, 760, 1114, 1178, 1240, 2228, 2356, 2785, 2945, 4456, 4712, 5570, 5890, 10583, 11140, 11780, 17267, 21166, 22280, 23560, 34534, 42332, 52915, 69068, 84664, 86335, 105830, 138136, 172670, 211660, 328073, 345340, 423320, 656146, 690680, 1312292, 1640365, 2624584, 3280730, 6561460, 13122920]

約数ペア:

[(1, 13122920), (2, 6561460), (4, 3280730), (5, 2624584), (8, 1640365), (10, 1312292), (19, 690680), (20, 656146), (31, 423320), (38, 345340), (40, 328073), (62, 211660), (76, 172670), (95, 138136), (124, 105830), (152, 86335), (155, 84664), (190, 69068), (248, 52915), (310, 42332), (380, 34534), (557, 23560), (589, 22280), (620, 21166), (760, 17267), (1114, 11780), (1178, 11140), (1240, 10583), (2228, 5890), (2356, 5570), (2785, 4712), (2945, 4456)]