18157580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5639}}^1$

素因数の和:5678

約数の個数: 48

約数和(自身を含む): 45480960

約数和(自身を除く): 27323380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 5639, 11278, 22556, 28195, 39473, 56390, 78946, 112780, 129697, 157892, 197365, 259394, 394730, 518788, 648485, 789460, 907879, 1296970, 1815758, 2593940, 3631516, 4539395, 9078790, 18157580]

約数ペア:

[(1, 18157580), (2, 9078790), (4, 4539395), (5, 3631516), (7, 2593940), (10, 1815758), (14, 1296970), (20, 907879), (23, 789460), (28, 648485), (35, 518788), (46, 394730), (70, 259394), (92, 197365), (115, 157892), (140, 129697), (161, 112780), (230, 78946), (322, 56390), (460, 39473), (644, 28195), (805, 22556), (1610, 11278), (3220, 5639)]