28418915

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{821}}^1$

素因数の和:899

約数の個数: 32

約数和(自身を含む): 41665536

約数和(自身を除く): 13246621

約数列:

[1, 5, 7, 23, 35, 43, 115, 161, 215, 301, 805, 821, 989, 1505, 4105, 4945, 5747, 6923, 18883, 28735, 34615, 35303, 94415, 132181, 176515, 247121, 660905, 811969, 1235605, 4059845, 5683783, 28418915]

約数ペア:

[(1, 28418915), (5, 5683783), (7, 4059845), (23, 1235605), (35, 811969), (43, 660905), (115, 247121), (161, 176515), (215, 132181), (301, 94415), (805, 35303), (821, 34615), (989, 28735), (1505, 18883), (4105, 6923), (4945, 5747)]