20212000

素因数分解:

$2^5\times 5^3\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:219

約数の個数: 96

約数和(自身を含む): 51577344

約数和(自身を除く): 31365344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 80, 100, 124, 125, 155, 160, 163, 200, 248, 250, 310, 326, 400, 496, 500, 620, 652, 775, 800, 815, 992, 1000, 1240, 1304, 1550, 1630, 2000, 2480, 2608, 3100, 3260, 3875, 4000, 4075, 4960, 5053, 5216, 6200, 6520, 7750, 8150, 10106, 12400, 13040, 15500, 16300, 20212, 20375, 24800, 25265, 26080, 31000, 32600, 40424, 40750, 50530, 62000, 65200, 80848, 81500, 101060, 124000, 126325, 130400, 161696, 163000, 202120, 252650, 326000, 404240, 505300, 631625, 652000, 808480, 1010600, 1263250, 2021200, 2526500, 4042400, 5053000, 10106000, 20212000]

約数ペア:

[(1, 20212000), (2, 10106000), (4, 5053000), (5, 4042400), (8, 2526500), (10, 2021200), (16, 1263250), (20, 1010600), (25, 808480), (31, 652000), (32, 631625), (40, 505300), (50, 404240), (62, 326000), (80, 252650), (100, 202120), (124, 163000), (125, 161696), (155, 130400), (160, 126325), (163, 124000), (200, 101060), (248, 81500), (250, 80848), (310, 65200), (326, 62000), (400, 50530), (496, 40750), (500, 40424), (620, 32600), (652, 31000), (775, 26080), (800, 25265), (815, 24800), (992, 20375), (1000, 20212), (1240, 16300), (1304, 15500), (1550, 13040), (1630, 12400), (2000, 10106), (2480, 8150), (2608, 7750), (3100, 6520), (3260, 6200), (3875, 5216), (4000, 5053), (4075, 4960)]