2987780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 6666240

約数和(自身を除く): 3678460

約数列:

[1, 2, 4, 5, 10, 20, 31, 61, 62, 79, 122, 124, 155, 158, 244, 305, 310, 316, 395, 610, 620, 790, 1220, 1580, 1891, 2449, 3782, 4819, 4898, 7564, 9455, 9638, 9796, 12245, 18910, 19276, 24095, 24490, 37820, 48190, 48980, 96380, 149389, 298778, 597556, 746945, 1493890, 2987780]

約数ペア:

[(1, 2987780), (2, 1493890), (4, 746945), (5, 597556), (10, 298778), (20, 149389), (31, 96380), (61, 48980), (62, 48190), (79, 37820), (122, 24490), (124, 24095), (155, 19276), (158, 18910), (244, 12245), (305, 9796), (310, 9638), (316, 9455), (395, 7564), (610, 4898), (620, 4819), (790, 3782), (1220, 2449), (1580, 1891)]