28456760

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{433}}^1$

素因数の和:528

約数の個数: 64

約数和(自身を含む): 67495680

約数和(自身を除く): 39038920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 53, 62, 106, 124, 155, 212, 248, 265, 310, 424, 433, 530, 620, 866, 1060, 1240, 1643, 1732, 2120, 2165, 3286, 3464, 4330, 6572, 8215, 8660, 13144, 13423, 16430, 17320, 22949, 26846, 32860, 45898, 53692, 65720, 67115, 91796, 107384, 114745, 134230, 183592, 229490, 268460, 458980, 536920, 711419, 917960, 1422838, 2845676, 3557095, 5691352, 7114190, 14228380, 28456760]

約数ペア:

[(1, 28456760), (2, 14228380), (4, 7114190), (5, 5691352), (8, 3557095), (10, 2845676), (20, 1422838), (31, 917960), (40, 711419), (53, 536920), (62, 458980), (106, 268460), (124, 229490), (155, 183592), (212, 134230), (248, 114745), (265, 107384), (310, 91796), (424, 67115), (433, 65720), (530, 53692), (620, 45898), (866, 32860), (1060, 26846), (1240, 22949), (1643, 17320), (1732, 16430), (2120, 13423), (2165, 13144), (3286, 8660), (3464, 8215), (4330, 6572)]