291245140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1\times {\mathrm{2179}}^1$

素因数の和:2392

約数の個数: 48

約数和(自身を含む): 630665280

約数和(自身を除く): 339420140

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 163, 164, 205, 326, 410, 652, 815, 820, 1630, 2179, 3260, 4358, 6683, 8716, 10895, 13366, 21790, 26732, 33415, 43580, 66830, 89339, 133660, 178678, 355177, 357356, 446695, 710354, 893390, 1420708, 1775885, 1786780, 3551770, 7103540, 14562257, 29124514, 58249028, 72811285, 145622570, 291245140]

約数ペア:

[(1, 291245140), (2, 145622570), (4, 72811285), (5, 58249028), (10, 29124514), (20, 14562257), (41, 7103540), (82, 3551770), (163, 1786780), (164, 1775885), (205, 1420708), (326, 893390), (410, 710354), (652, 446695), (815, 357356), (820, 355177), (1630, 178678), (2179, 133660), (3260, 89339), (4358, 66830), (6683, 43580), (8716, 33415), (10895, 26732), (13366, 21790)]