28322775

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{421}}^1$

素因数の和:473

約数の個数: 72

約数和(自身を含む): 57142176

約数和(自身を除く): 28819401

約数列:

[1, 3, 5, 9, 13, 15, 23, 25, 39, 45, 65, 69, 75, 115, 117, 195, 207, 225, 299, 325, 345, 421, 575, 585, 897, 975, 1035, 1263, 1495, 1725, 2105, 2691, 2925, 3789, 4485, 5175, 5473, 6315, 7475, 9683, 10525, 13455, 16419, 18945, 22425, 27365, 29049, 31575, 48415, 49257, 67275, 82095, 87147, 94725, 125879, 136825, 145245, 242075, 246285, 377637, 410475, 435735, 629395, 726225, 1132911, 1231425, 1888185, 2178675, 3146975, 5664555, 9440925, 28322775]

約数ペア:

[(1, 28322775), (3, 9440925), (5, 5664555), (9, 3146975), (13, 2178675), (15, 1888185), (23, 1231425), (25, 1132911), (39, 726225), (45, 629395), (65, 435735), (69, 410475), (75, 377637), (115, 246285), (117, 242075), (195, 145245), (207, 136825), (225, 125879), (299, 94725), (325, 87147), (345, 82095), (421, 67275), (575, 49257), (585, 48415), (897, 31575), (975, 29049), (1035, 27365), (1263, 22425), (1495, 18945), (1725, 16419), (2105, 13455), (2691, 10525), (2925, 9683), (3789, 7475), (4485, 6315), (5175, 5473)]