256379920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{5441}}^1$

素因数の和:5504

約数の個数: 80

約数和(自身を含む): 647815680

約数和(自身を除く): 391435760

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 190, 248, 304, 310, 380, 496, 589, 620, 760, 1178, 1240, 1520, 2356, 2480, 2945, 4712, 5441, 5890, 9424, 10882, 11780, 21764, 23560, 27205, 43528, 47120, 54410, 87056, 103379, 108820, 168671, 206758, 217640, 337342, 413516, 435280, 516895, 674684, 827032, 843355, 1033790, 1349368, 1654064, 1686710, 2067580, 2698736, 3204749, 3373420, 4135160, 6409498, 6746840, 8270320, 12818996, 13493680, 16023745, 25637992, 32047490, 51275984, 64094980, 128189960, 256379920]

約数ペア:

[(1, 256379920), (2, 128189960), (4, 64094980), (5, 51275984), (8, 32047490), (10, 25637992), (16, 16023745), (19, 13493680), (20, 12818996), (31, 8270320), (38, 6746840), (40, 6409498), (62, 4135160), (76, 3373420), (80, 3204749), (95, 2698736), (124, 2067580), (152, 1686710), (155, 1654064), (190, 1349368), (248, 1033790), (304, 843355), (310, 827032), (380, 674684), (496, 516895), (589, 435280), (620, 413516), (760, 337342), (1178, 217640), (1240, 206758), (1520, 168671), (2356, 108820), (2480, 103379), (2945, 87056), (4712, 54410), (5441, 47120), (5890, 43528), (9424, 27205), (10882, 23560), (11780, 21764)]