12040400

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{971}}^1$

素因数の和:1020

約数の個数: 60

約数和(自身を含む): 29890944

約数和(自身を除く): 17850544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 971, 1240, 1550, 1942, 2480, 3100, 3884, 4855, 6200, 7768, 9710, 12400, 15536, 19420, 24275, 30101, 38840, 48550, 60202, 77680, 97100, 120404, 150505, 194200, 240808, 301010, 388400, 481616, 602020, 752525, 1204040, 1505050, 2408080, 3010100, 6020200, 12040400]

約数ペア:

[(1, 12040400), (2, 6020200), (4, 3010100), (5, 2408080), (8, 1505050), (10, 1204040), (16, 752525), (20, 602020), (25, 481616), (31, 388400), (40, 301010), (50, 240808), (62, 194200), (80, 150505), (100, 120404), (124, 97100), (155, 77680), (200, 60202), (248, 48550), (310, 38840), (400, 30101), (496, 24275), (620, 19420), (775, 15536), (971, 12400), (1240, 9710), (1550, 7768), (1942, 6200), (2480, 4855), (3100, 3884)]