664978015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^2$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 909504288

約数和(自身を除く): 244526273

約数列:

[1, 5, 13, 43, 53, 65, 67, 215, 265, 335, 559, 689, 871, 2279, 2795, 2881, 3445, 3551, 4355, 4489, 11395, 14405, 17755, 22445, 29627, 37453, 46163, 58357, 148135, 152693, 187265, 193027, 230815, 237917, 291785, 763465, 965135, 1189585, 1985009, 2509351, 3092921, 9925045, 10230431, 12546755, 15464605, 51152155, 132995603, 664978015]

約数ペア:

[(1, 664978015), (5, 132995603), (13, 51152155), (43, 15464605), (53, 12546755), (65, 10230431), (67, 9925045), (215, 3092921), (265, 2509351), (335, 1985009), (559, 1189585), (689, 965135), (871, 763465), (2279, 291785), (2795, 237917), (2881, 230815), (3445, 193027), (3551, 187265), (4355, 152693), (4489, 148135), (11395, 58357), (14405, 46163), (17755, 37453), (22445, 29627)]