21403250

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:252

約数の個数: 64

約数和(自身を含む): 44972928

約数和(自身を除く): 23569678

約数列:

[1, 2, 5, 10, 11, 22, 25, 43, 50, 55, 86, 110, 125, 181, 215, 250, 275, 362, 430, 473, 550, 905, 946, 1075, 1375, 1810, 1991, 2150, 2365, 2750, 3982, 4525, 4730, 5375, 7783, 9050, 9955, 10750, 11825, 15566, 19910, 22625, 23650, 38915, 45250, 49775, 59125, 77830, 85613, 99550, 118250, 171226, 194575, 248875, 389150, 428065, 497750, 856130, 972875, 1945750, 2140325, 4280650, 10701625, 21403250]

約数ペア:

[(1, 21403250), (2, 10701625), (5, 4280650), (10, 2140325), (11, 1945750), (22, 972875), (25, 856130), (43, 497750), (50, 428065), (55, 389150), (86, 248875), (110, 194575), (125, 171226), (181, 118250), (215, 99550), (250, 85613), (275, 77830), (362, 59125), (430, 49775), (473, 45250), (550, 38915), (905, 23650), (946, 22625), (1075, 19910), (1375, 15566), (1810, 11825), (1991, 10750), (2150, 9955), (2365, 9050), (2750, 7783), (3982, 5375), (4525, 4730)]