2021800520

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{491}}^1\times {\mathrm{911}}^1$

素因数の和:1526

約数の個数: 64

約数和(自身を含む): 4603703040

約数和(自身を除く): 2581902520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 491, 565, 904, 911, 982, 1130, 1822, 1964, 2260, 2455, 3644, 3928, 4520, 4555, 4910, 7288, 9110, 9820, 18220, 19640, 36440, 55483, 102943, 110966, 205886, 221932, 277415, 411772, 443864, 447301, 514715, 554830, 823544, 894602, 1029430, 1109660, 1789204, 2058860, 2219320, 2236505, 3578408, 4117720, 4473010, 8946020, 17892040, 50545013, 101090026, 202180052, 252725065, 404360104, 505450130, 1010900260, 2021800520]

約数ペア:

[(1, 2021800520), (2, 1010900260), (4, 505450130), (5, 404360104), (8, 252725065), (10, 202180052), (20, 101090026), (40, 50545013), (113, 17892040), (226, 8946020), (452, 4473010), (491, 4117720), (565, 3578408), (904, 2236505), (911, 2219320), (982, 2058860), (1130, 1789204), (1822, 1109660), (1964, 1029430), (2260, 894602), (2455, 823544), (3644, 554830), (3928, 514715), (4520, 447301), (4555, 443864), (4910, 411772), (7288, 277415), (9110, 221932), (9820, 205886), (18220, 110966), (19640, 102943), (36440, 55483)]