15840225

素因数分解:

$3^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{757}}^1$

素因数の和:807

約数の個数: 48

約数和(自身を含む): 30077440

約数和(自身を除く): 14237215

約数列:

[1, 3, 5, 9, 15, 25, 27, 31, 45, 75, 93, 135, 155, 225, 279, 465, 675, 757, 775, 837, 1395, 2271, 2325, 3785, 4185, 6813, 6975, 11355, 18925, 20439, 20925, 23467, 34065, 56775, 70401, 102195, 117335, 170325, 211203, 352005, 510975, 586675, 633609, 1056015, 1760025, 3168045, 5280075, 15840225]

約数ペア:

[(1, 15840225), (3, 5280075), (5, 3168045), (9, 1760025), (15, 1056015), (25, 633609), (27, 586675), (31, 510975), (45, 352005), (75, 211203), (93, 170325), (135, 117335), (155, 102195), (225, 70401), (279, 56775), (465, 34065), (675, 23467), (757, 20925), (775, 20439), (837, 18925), (1395, 11355), (2271, 6975), (2325, 6813), (3785, 4185)]