21783164

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{509}}^1\times {\mathrm{823}}^1$

素因数の和:1349

約数の個数: 24

約数和(自身を含む): 41183520

約数和(自身を除く): 19400356

約数列:

[1, 2, 4, 13, 26, 52, 509, 823, 1018, 1646, 2036, 3292, 6617, 10699, 13234, 21398, 26468, 42796, 418907, 837814, 1675628, 5445791, 10891582, 21783164]

約数ペア:

[(1, 21783164), (2, 10891582), (4, 5445791), (13, 1675628), (26, 837814), (52, 418907), (509, 42796), (823, 26468), (1018, 21398), (1646, 13234), (2036, 10699), (3292, 6617)]