21484996

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{1571}}^1$

素因数の和:1851

約数の個数: 24

約数和(自身を含む): 40670784

約数和(自身を除く): 19185788

約数列:

[1, 2, 4, 13, 26, 52, 263, 526, 1052, 1571, 3142, 3419, 6284, 6838, 13676, 20423, 40846, 81692, 413173, 826346, 1652692, 5371249, 10742498, 21484996]

約数ペア:

[(1, 21484996), (2, 10742498), (4, 5371249), (13, 1652692), (26, 826346), (52, 413173), (263, 81692), (526, 40846), (1052, 20423), (1571, 13676), (3142, 6838), (3419, 6284)]