28722525

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 51871680

約数和(自身を除く): 23149155

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 89, 195, 267, 325, 331, 445, 975, 993, 1157, 1335, 1655, 2225, 3471, 4303, 4965, 5785, 6675, 8275, 12909, 17355, 21515, 24825, 28925, 29459, 64545, 86775, 88377, 107575, 147295, 322725, 382967, 441885, 736475, 1148901, 1914835, 2209425, 5744505, 9574175, 28722525]

約数ペア:

[(1, 28722525), (3, 9574175), (5, 5744505), (13, 2209425), (15, 1914835), (25, 1148901), (39, 736475), (65, 441885), (75, 382967), (89, 322725), (195, 147295), (267, 107575), (325, 88377), (331, 86775), (445, 64545), (975, 29459), (993, 28925), (1157, 24825), (1335, 21515), (1655, 17355), (2225, 12909), (3471, 8275), (4303, 6675), (4965, 5785)]