28199925

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:371

約数の個数: 72

約数和(自身を含む): 56329728

約数和(自身を除く): 28129803

約数列:

[1, 3, 5, 9, 13, 15, 25, 31, 39, 45, 65, 75, 93, 117, 155, 195, 225, 279, 311, 325, 403, 465, 585, 775, 933, 975, 1209, 1395, 1555, 2015, 2325, 2799, 2925, 3627, 4043, 4665, 6045, 6975, 7775, 9641, 10075, 12129, 13995, 18135, 20215, 23325, 28923, 30225, 36387, 48205, 60645, 69975, 86769, 90675, 101075, 125333, 144615, 181935, 241025, 303225, 375999, 433845, 626665, 723075, 909675, 1127997, 1879995, 2169225, 3133325, 5639985, 9399975, 28199925]

約数ペア:

[(1, 28199925), (3, 9399975), (5, 5639985), (9, 3133325), (13, 2169225), (15, 1879995), (25, 1127997), (31, 909675), (39, 723075), (45, 626665), (65, 433845), (75, 375999), (93, 303225), (117, 241025), (155, 181935), (195, 144615), (225, 125333), (279, 101075), (311, 90675), (325, 86769), (403, 69975), (465, 60645), (585, 48205), (775, 36387), (933, 30225), (975, 28923), (1209, 23325), (1395, 20215), (1555, 18135), (2015, 13995), (2325, 12129), (2799, 10075), (2925, 9641), (3627, 7775), (4043, 6975), (4665, 6045)]