21815570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{8423}}^1$

素因数の和:8474

約数の個数: 32

約数和(自身を含む): 46096128

約数和(自身を除く): 24280558

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 70, 74, 185, 259, 370, 518, 1295, 2590, 8423, 16846, 42115, 58961, 84230, 117922, 294805, 311651, 589610, 623302, 1558255, 2181557, 3116510, 4363114, 10907785, 21815570]

約数ペア:

[(1, 21815570), (2, 10907785), (5, 4363114), (7, 3116510), (10, 2181557), (14, 1558255), (35, 623302), (37, 589610), (70, 311651), (74, 294805), (185, 117922), (259, 84230), (370, 58961), (518, 42115), (1295, 16846), (2590, 8423)]