19954980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{1879}}^1$

素因数の和:1953

約数の個数: 72

約数和(自身を含む): 61588800

約数和(自身を除く): 41633820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 59, 60, 90, 118, 177, 180, 236, 295, 354, 531, 590, 708, 885, 1062, 1180, 1770, 1879, 2124, 2655, 3540, 3758, 5310, 5637, 7516, 9395, 10620, 11274, 16911, 18790, 22548, 28185, 33822, 37580, 56370, 67644, 84555, 110861, 112740, 169110, 221722, 332583, 338220, 443444, 554305, 665166, 997749, 1108610, 1330332, 1662915, 1995498, 2217220, 3325830, 3990996, 4988745, 6651660, 9977490, 19954980]

約数ペア:

[(1, 19954980), (2, 9977490), (3, 6651660), (4, 4988745), (5, 3990996), (6, 3325830), (9, 2217220), (10, 1995498), (12, 1662915), (15, 1330332), (18, 1108610), (20, 997749), (30, 665166), (36, 554305), (45, 443444), (59, 338220), (60, 332583), (90, 221722), (118, 169110), (177, 112740), (180, 110861), (236, 84555), (295, 67644), (354, 56370), (531, 37580), (590, 33822), (708, 28185), (885, 22548), (1062, 18790), (1180, 16911), (1770, 11274), (1879, 10620), (2124, 9395), (2655, 7516), (3540, 5637), (3758, 5310)]