21000929005

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4951}}^1\times {\mathrm{7129}}^1$

素因数の和:12109

約数の個数: 32

約数和(自身を含む): 30505904640

約数和(自身を除く): 9504975635

約数列:

[1, 5, 7, 17, 35, 85, 119, 595, 4951, 7129, 24755, 34657, 35645, 49903, 84167, 121193, 173285, 249515, 420835, 589169, 605965, 848351, 2945845, 4241755, 35295679, 176478395, 247069753, 600026543, 1235348765, 3000132715, 4200185801, 21000929005]

約数ペア:

[(1, 21000929005), (5, 4200185801), (7, 3000132715), (17, 1235348765), (35, 600026543), (85, 247069753), (119, 176478395), (595, 35295679), (4951, 4241755), (7129, 2945845), (24755, 848351), (34657, 605965), (35645, 589169), (49903, 420835), (84167, 249515), (121193, 173285)]