28883475

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:189

約数の個数: 72

約数和(自身を含む): 55246464

約数和(自身を除く): 26362989

約数列:

[1, 3, 5, 9, 15, 25, 31, 41, 45, 75, 93, 101, 123, 155, 205, 225, 279, 303, 369, 465, 505, 615, 775, 909, 1025, 1271, 1395, 1515, 1845, 2325, 2525, 3075, 3131, 3813, 4141, 4545, 6355, 6975, 7575, 9225, 9393, 11439, 12423, 15655, 19065, 20705, 22725, 28179, 31775, 37269, 46965, 57195, 62115, 78275, 95325, 103525, 128371, 140895, 186345, 234825, 285975, 310575, 385113, 641855, 704475, 931725, 1155339, 1925565, 3209275, 5776695, 9627825, 28883475]

約数ペア:

[(1, 28883475), (3, 9627825), (5, 5776695), (9, 3209275), (15, 1925565), (25, 1155339), (31, 931725), (41, 704475), (45, 641855), (75, 385113), (93, 310575), (101, 285975), (123, 234825), (155, 186345), (205, 140895), (225, 128371), (279, 103525), (303, 95325), (369, 78275), (465, 62115), (505, 57195), (615, 46965), (775, 37269), (909, 31775), (1025, 28179), (1271, 22725), (1395, 20705), (1515, 19065), (1845, 15655), (2325, 12423), (2525, 11439), (3075, 9393), (3131, 9225), (3813, 7575), (4141, 6975), (4545, 6355)]