290020960

素因数分解:

$2^5\times 5^1\times {\mathrm{439}}^1\times {\mathrm{4129}}^1$

素因数の和:4583

約数の個数: 48

約数和(自身を含む): 686901600

約数和(自身を除く): 396880640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 439, 878, 1756, 2195, 3512, 4129, 4390, 7024, 8258, 8780, 14048, 16516, 17560, 20645, 33032, 35120, 41290, 66064, 70240, 82580, 132128, 165160, 330320, 660640, 1812631, 3625262, 7250524, 9063155, 14501048, 18126310, 29002096, 36252620, 58004192, 72505240, 145010480, 290020960]

約数ペア:

[(1, 290020960), (2, 145010480), (4, 72505240), (5, 58004192), (8, 36252620), (10, 29002096), (16, 18126310), (20, 14501048), (32, 9063155), (40, 7250524), (80, 3625262), (160, 1812631), (439, 660640), (878, 330320), (1756, 165160), (2195, 132128), (3512, 82580), (4129, 70240), (4390, 66064), (7024, 41290), (8258, 35120), (8780, 33032), (14048, 20645), (16516, 17560)]