18003885

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{271}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 29872128

約数和(自身を除く): 11868243

約数列:

[1, 3, 5, 15, 43, 103, 129, 215, 271, 309, 515, 645, 813, 1355, 1545, 4065, 4429, 11653, 13287, 22145, 27913, 34959, 58265, 66435, 83739, 139565, 174795, 418695, 1200259, 3600777, 6001295, 18003885]

約数ペア:

[(1, 18003885), (3, 6001295), (5, 3600777), (15, 1200259), (43, 418695), (103, 174795), (129, 139565), (215, 83739), (271, 66435), (309, 58265), (515, 34959), (645, 27913), (813, 22145), (1355, 13287), (1545, 11653), (4065, 4429)]