81264425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{151}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 117611520

約数和(自身を除く): 36347095

約数列:

[1, 5, 11, 19, 25, 55, 95, 103, 151, 209, 275, 475, 515, 755, 1045, 1133, 1661, 1957, 2575, 2869, 3775, 5225, 5665, 8305, 9785, 14345, 15553, 21527, 28325, 31559, 41525, 48925, 71725, 77765, 107635, 157795, 171083, 295507, 388825, 538175, 788975, 855415, 1477535, 3250577, 4277075, 7387675, 16252885, 81264425]

約数ペア:

[(1, 81264425), (5, 16252885), (11, 7387675), (19, 4277075), (25, 3250577), (55, 1477535), (95, 855415), (103, 788975), (151, 538175), (209, 388825), (275, 295507), (475, 171083), (515, 157795), (755, 107635), (1045, 77765), (1133, 71725), (1661, 48925), (1957, 41525), (2575, 31559), (2869, 28325), (3775, 21527), (5225, 15553), (5665, 14345), (8305, 9785)]