20197020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19801}}^1$

素因数の和:19830

約数の個数: 48

約数和(自身を含む): 59881248

約数和(自身を除く): 39684228

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 19801, 39602, 59403, 79204, 99005, 118806, 198010, 237612, 297015, 336617, 396020, 594030, 673234, 1009851, 1188060, 1346468, 1683085, 2019702, 3366170, 4039404, 5049255, 6732340, 10098510, 20197020]

約数ペア:

[(1, 20197020), (2, 10098510), (3, 6732340), (4, 5049255), (5, 4039404), (6, 3366170), (10, 2019702), (12, 1683085), (15, 1346468), (17, 1188060), (20, 1009851), (30, 673234), (34, 594030), (51, 396020), (60, 336617), (68, 297015), (85, 237612), (102, 198010), (170, 118806), (204, 99005), (255, 79204), (340, 59403), (510, 39602), (1020, 19801)]