18838690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1$

素因数の和:331

約数の個数: 64

約数和(自身を含む): 39916800

約数和(自身を除く): 21078110

約数列:

[1, 2, 5, 10, 13, 19, 26, 29, 38, 58, 65, 95, 130, 145, 190, 247, 263, 290, 377, 494, 526, 551, 754, 1102, 1235, 1315, 1885, 2470, 2630, 2755, 3419, 3770, 4997, 5510, 6838, 7163, 7627, 9994, 14326, 15254, 17095, 24985, 34190, 35815, 38135, 49970, 64961, 71630, 76270, 99151, 129922, 144913, 198302, 289826, 324805, 495755, 649610, 724565, 991510, 1449130, 1883869, 3767738, 9419345, 18838690]

約数ペア:

[(1, 18838690), (2, 9419345), (5, 3767738), (10, 1883869), (13, 1449130), (19, 991510), (26, 724565), (29, 649610), (38, 495755), (58, 324805), (65, 289826), (95, 198302), (130, 144913), (145, 129922), (190, 99151), (247, 76270), (263, 71630), (290, 64961), (377, 49970), (494, 38135), (526, 35815), (551, 34190), (754, 24985), (1102, 17095), (1235, 15254), (1315, 14326), (1885, 9994), (2470, 7627), (2630, 7163), (2755, 6838), (3419, 5510), (3770, 4997)]