21275145

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{151}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 38697984

約数和(自身を除く): 17422839

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 101, 151, 155, 279, 303, 453, 465, 505, 755, 909, 1359, 1395, 1515, 2265, 3131, 4545, 4681, 6795, 9393, 14043, 15251, 15655, 23405, 28179, 42129, 45753, 46965, 70215, 76255, 137259, 140895, 210645, 228765, 472781, 686295, 1418343, 2363905, 4255029, 7091715, 21275145]

約数ペア:

[(1, 21275145), (3, 7091715), (5, 4255029), (9, 2363905), (15, 1418343), (31, 686295), (45, 472781), (93, 228765), (101, 210645), (151, 140895), (155, 137259), (279, 76255), (303, 70215), (453, 46965), (465, 45753), (505, 42129), (755, 28179), (909, 23405), (1359, 15655), (1395, 15251), (1515, 14043), (2265, 9393), (3131, 6795), (4545, 4681)]