21103838

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{311}}^1$

素因数の和:488

約数の個数: 32

約数和(自身を含む): 37559808

約数和(自身を除く): 16455970

約数列:

[1, 2, 7, 14, 37, 74, 131, 259, 262, 311, 518, 622, 917, 1834, 2177, 4354, 4847, 9694, 11507, 23014, 33929, 40741, 67858, 80549, 81482, 161098, 285187, 570374, 1507417, 3014834, 10551919, 21103838]

約数ペア:

[(1, 21103838), (2, 10551919), (7, 3014834), (14, 1507417), (37, 570374), (74, 285187), (131, 161098), (259, 81482), (262, 80549), (311, 67858), (518, 40741), (622, 33929), (917, 23014), (1834, 11507), (2177, 9694), (4354, 4847)]