21853390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{193}}^1$

素因数の和:293

約数の個数: 48

約数和(自身を含む): 43454448

約数和(自身を除く): 21601058

約数列:

[1, 2, 5, 10, 13, 26, 65, 67, 130, 134, 169, 193, 335, 338, 386, 670, 845, 871, 965, 1690, 1742, 1930, 2509, 4355, 5018, 8710, 11323, 12545, 12931, 22646, 25090, 25862, 32617, 56615, 64655, 65234, 113230, 129310, 163085, 168103, 326170, 336206, 840515, 1681030, 2185339, 4370678, 10926695, 21853390]

約数ペア:

[(1, 21853390), (2, 10926695), (5, 4370678), (10, 2185339), (13, 1681030), (26, 840515), (65, 336206), (67, 326170), (130, 168103), (134, 163085), (169, 129310), (193, 113230), (335, 65234), (338, 64655), (386, 56615), (670, 32617), (845, 25862), (871, 25090), (965, 22646), (1690, 12931), (1742, 12545), (1930, 11323), (2509, 8710), (4355, 5018)]