21565305

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5153}}^1$

素因数の和:5198

約数の個数: 32

約数和(自身を含む): 39582720

約数和(自身を除く): 18017415

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 93, 135, 155, 279, 465, 837, 1395, 4185, 5153, 15459, 25765, 46377, 77295, 139131, 159743, 231885, 479229, 695655, 798715, 1437687, 2396145, 4313061, 7188435, 21565305]

約数ペア:

[(1, 21565305), (3, 7188435), (5, 4313061), (9, 2396145), (15, 1437687), (27, 798715), (31, 695655), (45, 479229), (93, 231885), (135, 159743), (155, 139131), (279, 77295), (465, 46377), (837, 25765), (1395, 15459), (4185, 5153)]