80469980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{929}}^1$

素因数の和:1070

約数の個数: 48

約数和(自身を含む): 174363840

約数和(自身を除く): 93893860

約数列:

[1, 2, 4, 5, 10, 20, 61, 71, 122, 142, 244, 284, 305, 355, 610, 710, 929, 1220, 1420, 1858, 3716, 4331, 4645, 8662, 9290, 17324, 18580, 21655, 43310, 56669, 65959, 86620, 113338, 131918, 226676, 263836, 283345, 329795, 566690, 659590, 1133380, 1319180, 4023499, 8046998, 16093996, 20117495, 40234990, 80469980]

約数ペア:

[(1, 80469980), (2, 40234990), (4, 20117495), (5, 16093996), (10, 8046998), (20, 4023499), (61, 1319180), (71, 1133380), (122, 659590), (142, 566690), (244, 329795), (284, 283345), (305, 263836), (355, 226676), (610, 131918), (710, 113338), (929, 86620), (1220, 65959), (1420, 56669), (1858, 43310), (3716, 21655), (4331, 18580), (4645, 17324), (8662, 9290)]