256460680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{12547}}^1$

素因数の和:12638

約数の個数: 64

約数和(自身を含む): 668557440

約数和(自身を除く): 412096760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 280, 292, 365, 511, 584, 730, 1022, 1460, 2044, 2555, 2920, 4088, 5110, 10220, 12547, 20440, 25094, 50188, 62735, 87829, 100376, 125470, 175658, 250940, 351316, 439145, 501880, 702632, 878290, 915931, 1756580, 1831862, 3513160, 3663724, 4579655, 6411517, 7327448, 9159310, 12823034, 18318620, 25646068, 32057585, 36637240, 51292136, 64115170, 128230340, 256460680]

約数ペア:

[(1, 256460680), (2, 128230340), (4, 64115170), (5, 51292136), (7, 36637240), (8, 32057585), (10, 25646068), (14, 18318620), (20, 12823034), (28, 9159310), (35, 7327448), (40, 6411517), (56, 4579655), (70, 3663724), (73, 3513160), (140, 1831862), (146, 1756580), (280, 915931), (292, 878290), (365, 702632), (511, 501880), (584, 439145), (730, 351316), (1022, 250940), (1460, 175658), (2044, 125470), (2555, 100376), (2920, 87829), (4088, 62735), (5110, 50188), (10220, 25094), (12547, 20440)]