21359390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3821}}^1$

素因数の和:3884

約数の個数: 32

約数和(自身を含む): 42378336

約数和(自身を除く): 21018946

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 215, 430, 559, 1118, 2795, 3821, 5590, 7642, 19105, 38210, 49673, 99346, 164303, 248365, 328606, 496730, 821515, 1643030, 2135939, 4271878, 10679695, 21359390]

約数ペア:

[(1, 21359390), (2, 10679695), (5, 4271878), (10, 2135939), (13, 1643030), (26, 821515), (43, 496730), (65, 328606), (86, 248365), (130, 164303), (215, 99346), (430, 49673), (559, 38210), (1118, 19105), (2795, 7642), (3821, 5590)]