81280990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{7793}}^1$

素因数の和:7956

約数の個数: 32

約数和(自身を含む): 168350400

約数和(自身を除く): 87069410

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 149, 298, 745, 1043, 1490, 2086, 5215, 7793, 10430, 15586, 38965, 54551, 77930, 109102, 272755, 545510, 1161157, 2322314, 5805785, 8128099, 11611570, 16256198, 40640495, 81280990]

約数ペア:

[(1, 81280990), (2, 40640495), (5, 16256198), (7, 11611570), (10, 8128099), (14, 5805785), (35, 2322314), (70, 1161157), (149, 545510), (298, 272755), (745, 109102), (1043, 77930), (1490, 54551), (2086, 38965), (5215, 15586), (7793, 10430)]