21872360

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{569}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 50940900

約数和(自身を除く): 29068540

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 569, 620, 961, 1138, 1240, 1922, 2276, 2845, 3844, 4552, 4805, 5690, 7688, 9610, 11380, 17639, 19220, 22760, 35278, 38440, 70556, 88195, 141112, 176390, 352780, 546809, 705560, 1093618, 2187236, 2734045, 4374472, 5468090, 10936180, 21872360]

約数ペア:

[(1, 21872360), (2, 10936180), (4, 5468090), (5, 4374472), (8, 2734045), (10, 2187236), (20, 1093618), (31, 705560), (40, 546809), (62, 352780), (124, 176390), (155, 141112), (248, 88195), (310, 70556), (569, 38440), (620, 35278), (961, 22760), (1138, 19220), (1240, 17639), (1922, 11380), (2276, 9610), (2845, 7688), (3844, 5690), (4552, 4805)]