20121390

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1249}}^1$

素因数の和:1441

約数の個数: 48

約数和(自身を含む): 52650000

約数和(自身を除く): 32528610

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 179, 358, 537, 895, 1074, 1249, 1611, 1790, 2498, 2685, 3222, 3747, 5370, 6245, 7494, 8055, 11241, 12490, 16110, 18735, 22482, 37470, 56205, 112410, 223571, 447142, 670713, 1117855, 1341426, 2012139, 2235710, 3353565, 4024278, 6707130, 10060695, 20121390]

約数ペア:

[(1, 20121390), (2, 10060695), (3, 6707130), (5, 4024278), (6, 3353565), (9, 2235710), (10, 2012139), (15, 1341426), (18, 1117855), (30, 670713), (45, 447142), (90, 223571), (179, 112410), (358, 56205), (537, 37470), (895, 22482), (1074, 18735), (1249, 16110), (1611, 12490), (1790, 11241), (2498, 8055), (2685, 7494), (3222, 6245), (3747, 5370)]