20047700

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:297

約数の個数: 72

約数和(自身を含む): 46663680

約数和(自身を除く): 26615980

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 31, 50, 58, 62, 100, 116, 124, 145, 155, 223, 290, 310, 446, 580, 620, 725, 775, 892, 899, 1115, 1450, 1550, 1798, 2230, 2900, 3100, 3596, 4460, 4495, 5575, 6467, 6913, 8990, 11150, 12934, 13826, 17980, 22300, 22475, 25868, 27652, 32335, 34565, 44950, 64670, 69130, 89900, 129340, 138260, 161675, 172825, 200477, 323350, 345650, 400954, 646700, 691300, 801908, 1002385, 2004770, 4009540, 5011925, 10023850, 20047700]

約数ペア:

[(1, 20047700), (2, 10023850), (4, 5011925), (5, 4009540), (10, 2004770), (20, 1002385), (25, 801908), (29, 691300), (31, 646700), (50, 400954), (58, 345650), (62, 323350), (100, 200477), (116, 172825), (124, 161675), (145, 138260), (155, 129340), (223, 89900), (290, 69130), (310, 64670), (446, 44950), (580, 34565), (620, 32335), (725, 27652), (775, 25868), (892, 22475), (899, 22300), (1115, 17980), (1450, 13826), (1550, 12934), (1798, 11150), (2230, 8990), (2900, 6913), (3100, 6467), (3596, 5575), (4460, 4495)]