20376460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{719}}^1$

素因数の和:850

約数の個数: 48

約数和(自身を含む): 46569600

約数和(自身を除く): 26193140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 719, 1090, 1417, 1438, 2180, 2834, 2876, 3595, 5668, 7085, 7190, 9347, 14170, 14380, 18694, 28340, 37388, 46735, 78371, 93470, 156742, 186940, 313484, 391855, 783710, 1018823, 1567420, 2037646, 4075292, 5094115, 10188230, 20376460]

約数ペア:

[(1, 20376460), (2, 10188230), (4, 5094115), (5, 4075292), (10, 2037646), (13, 1567420), (20, 1018823), (26, 783710), (52, 391855), (65, 313484), (109, 186940), (130, 156742), (218, 93470), (260, 78371), (436, 46735), (545, 37388), (719, 28340), (1090, 18694), (1417, 14380), (1438, 14170), (2180, 9347), (2834, 7190), (2876, 7085), (3595, 5668)]