28931080

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 67495680

約数和(自身を除く): 38564600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 71, 122, 142, 167, 244, 284, 305, 334, 355, 488, 568, 610, 668, 710, 835, 1220, 1336, 1420, 1670, 2440, 2840, 3340, 4331, 6680, 8662, 10187, 11857, 17324, 20374, 21655, 23714, 34648, 40748, 43310, 47428, 50935, 59285, 81496, 86620, 94856, 101870, 118570, 173240, 203740, 237140, 407480, 474280, 723277, 1446554, 2893108, 3616385, 5786216, 7232770, 14465540, 28931080]

約数ペア:

[(1, 28931080), (2, 14465540), (4, 7232770), (5, 5786216), (8, 3616385), (10, 2893108), (20, 1446554), (40, 723277), (61, 474280), (71, 407480), (122, 237140), (142, 203740), (167, 173240), (244, 118570), (284, 101870), (305, 94856), (334, 86620), (355, 81496), (488, 59285), (568, 50935), (610, 47428), (668, 43310), (710, 40748), (835, 34648), (1220, 23714), (1336, 21655), (1420, 20374), (1670, 17324), (2440, 11857), (2840, 10187), (3340, 8662), (4331, 6680)]