20147647775

素因数分解:

$5^2\times {\mathrm{29}}^2\times {\mathrm{73}}^1\times {\mathrm{13127}}^1$

素因数の和:13268

約数の個数: 36

約数和(自身を含む): 26230715472

約数和(自身を除く): 6083067697

約数列:

[1, 5, 25, 29, 73, 145, 365, 725, 841, 1825, 2117, 4205, 10585, 13127, 21025, 52925, 61393, 65635, 306965, 328175, 380683, 958271, 1534825, 1903415, 4791355, 9517075, 11039807, 23956775, 27789859, 55199035, 138949295, 275995175, 694746475, 805905911, 4029529555, 20147647775]

約数ペア:

[(1, 20147647775), (5, 4029529555), (25, 805905911), (29, 694746475), (73, 275995175), (145, 138949295), (365, 55199035), (725, 27789859), (841, 23956775), (1825, 11039807), (2117, 9517075), (4205, 4791355), (10585, 1903415), (13127, 1534825), (21025, 958271), (52925, 380683), (61393, 328175), (65635, 306965)]