256925890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{907}}^1\times {\mathrm{2179}}^1$

素因数の和:3106

約数の個数: 32

約数和(自身を含む): 498818880

約数和(自身を除く): 241892990

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 907, 1814, 2179, 4358, 4535, 9070, 10895, 11791, 21790, 23582, 28327, 56654, 58955, 117910, 141635, 283270, 1976353, 3952706, 9881765, 19763530, 25692589, 51385178, 128462945, 256925890]

約数ペア:

[(1, 256925890), (2, 128462945), (5, 51385178), (10, 25692589), (13, 19763530), (26, 9881765), (65, 3952706), (130, 1976353), (907, 283270), (1814, 141635), (2179, 117910), (4358, 58955), (4535, 56654), (9070, 28327), (10895, 23582), (11791, 21790)]