12990431545

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{320791}}^1$

素因数の和:320905

約数の個数: 32

約数和(自身を含む): 19401500160

約数和(自身を除く): 6411068615

約数列:

[1, 5, 7, 13, 35, 65, 89, 91, 445, 455, 623, 1157, 3115, 5785, 8099, 40495, 320791, 1603955, 2245537, 4170283, 11227685, 20851415, 28550399, 29191981, 142751995, 145959905, 199852793, 371155187, 999263965, 1855775935, 2598086309, 12990431545]

約数ペア:

[(1, 12990431545), (5, 2598086309), (7, 1855775935), (13, 999263965), (35, 371155187), (65, 199852793), (89, 145959905), (91, 142751995), (445, 29191981), (455, 28550399), (623, 20851415), (1157, 11227685), (3115, 4170283), (5785, 2245537), (8099, 1603955), (40495, 320791)]