28551355

素因数分解:

$5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 40854528

約数和(自身を除く): 12303173

約数列:

[1, 5, 7, 35, 43, 61, 215, 301, 305, 311, 427, 1505, 1555, 2135, 2177, 2623, 10885, 13115, 13373, 18361, 18971, 66865, 91805, 93611, 94855, 132797, 468055, 663985, 815753, 4078765, 5710271, 28551355]

約数ペア:

[(1, 28551355), (5, 5710271), (7, 4078765), (35, 815753), (43, 663985), (61, 468055), (215, 132797), (301, 94855), (305, 93611), (311, 91805), (427, 66865), (1505, 18971), (1555, 18361), (2135, 13373), (2177, 13115), (2623, 10885)]