21518750

素因数分解:

$2^1\times 5^5\times {\mathrm{11}}^1\times {\mathrm{313}}^1$

素因数の和:351

約数の個数: 48

約数和(自身を含む): 44153424

約数和(自身を除く): 22634674

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 250, 275, 313, 550, 625, 626, 1250, 1375, 1565, 2750, 3125, 3130, 3443, 6250, 6875, 6886, 7825, 13750, 15650, 17215, 34375, 34430, 39125, 68750, 78250, 86075, 172150, 195625, 391250, 430375, 860750, 978125, 1956250, 2151875, 4303750, 10759375, 21518750]

約数ペア:

[(1, 21518750), (2, 10759375), (5, 4303750), (10, 2151875), (11, 1956250), (22, 978125), (25, 860750), (50, 430375), (55, 391250), (110, 195625), (125, 172150), (250, 86075), (275, 78250), (313, 68750), (550, 39125), (625, 34430), (626, 34375), (1250, 17215), (1375, 15650), (1565, 13750), (2750, 7825), (3125, 6886), (3130, 6875), (3443, 6250)]