20187718475

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{12889}}^1$

素因数の和:13020

約数の個数: 48

約数和(自身を含む): 27005890560

約数和(自身を除く): 6818172085

約数列:

[1, 5, 25, 31, 43, 47, 155, 215, 235, 775, 1075, 1175, 1333, 1457, 2021, 6665, 7285, 10105, 12889, 33325, 36425, 50525, 62651, 64445, 313255, 322225, 399559, 554227, 605783, 1566275, 1997795, 2771135, 3028915, 9988975, 13855675, 15144575, 17181037, 18779273, 26048669, 85905185, 93896365, 130243345, 429525925, 469481825, 651216725, 807508739, 4037543695, 20187718475]

約数ペア:

[(1, 20187718475), (5, 4037543695), (25, 807508739), (31, 651216725), (43, 469481825), (47, 429525925), (155, 130243345), (215, 93896365), (235, 85905185), (775, 26048669), (1075, 18779273), (1175, 17181037), (1333, 15144575), (1457, 13855675), (2021, 9988975), (6665, 3028915), (7285, 2771135), (10105, 1997795), (12889, 1566275), (33325, 605783), (36425, 554227), (50525, 399559), (62651, 322225), (64445, 313255)]