287865680

素因数分解:

$2^4\times 5^1\times {\mathrm{991}}^1\times {\mathrm{3631}}^1$

素因数の和:4635

約数の個数: 40

約数和(自身を含む): 670147584

約数和(自身を除く): 382281904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 991, 1982, 3631, 3964, 4955, 7262, 7928, 9910, 14524, 15856, 18155, 19820, 29048, 36310, 39640, 58096, 72620, 79280, 145240, 290480, 3598321, 7196642, 14393284, 17991605, 28786568, 35983210, 57573136, 71966420, 143932840, 287865680]

約数ペア:

[(1, 287865680), (2, 143932840), (4, 71966420), (5, 57573136), (8, 35983210), (10, 28786568), (16, 17991605), (20, 14393284), (40, 7196642), (80, 3598321), (991, 290480), (1982, 145240), (3631, 79280), (3964, 72620), (4955, 58096), (7262, 39640), (7928, 36310), (9910, 29048), (14524, 19820), (15856, 18155)]