161158840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^2\times {\mathrm{2179}}^1$

素因数の和:2276

約数の個数: 48

約数和(自身を含む): 371406600

約数和(自身を除く): 210247760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 1849, 2179, 3698, 4358, 7396, 8716, 9245, 10895, 14792, 17432, 18490, 21790, 36980, 43580, 73960, 87160, 93697, 187394, 374788, 468485, 749576, 936970, 1873940, 3747880, 4028971, 8057942, 16115884, 20144855, 32231768, 40289710, 80579420, 161158840]

約数ペア:

[(1, 161158840), (2, 80579420), (4, 40289710), (5, 32231768), (8, 20144855), (10, 16115884), (20, 8057942), (40, 4028971), (43, 3747880), (86, 1873940), (172, 936970), (215, 749576), (344, 468485), (430, 374788), (860, 187394), (1720, 93697), (1849, 87160), (2179, 73960), (3698, 43580), (4358, 36980), (7396, 21790), (8716, 18490), (9245, 17432), (10895, 14792)]