28331000

素因数分解:

$2^3\times 5^3\times {\mathrm{41}}^1\times {\mathrm{691}}^1$

素因数の和:753

約数の個数: 64

約数和(自身を含む): 68009760

約数和(自身を除く): 39678760

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 125, 164, 200, 205, 250, 328, 410, 500, 691, 820, 1000, 1025, 1382, 1640, 2050, 2764, 3455, 4100, 5125, 5528, 6910, 8200, 10250, 13820, 17275, 20500, 27640, 28331, 34550, 41000, 56662, 69100, 86375, 113324, 138200, 141655, 172750, 226648, 283310, 345500, 566620, 691000, 708275, 1133240, 1416550, 2833100, 3541375, 5666200, 7082750, 14165500, 28331000]

約数ペア:

[(1, 28331000), (2, 14165500), (4, 7082750), (5, 5666200), (8, 3541375), (10, 2833100), (20, 1416550), (25, 1133240), (40, 708275), (41, 691000), (50, 566620), (82, 345500), (100, 283310), (125, 226648), (164, 172750), (200, 141655), (205, 138200), (250, 113324), (328, 86375), (410, 69100), (500, 56662), (691, 41000), (820, 34550), (1000, 28331), (1025, 27640), (1382, 20500), (1640, 17275), (2050, 13820), (2764, 10250), (3455, 8200), (4100, 6910), (5125, 5528)]