21561856

素因数分解:

$2^9\times {\mathrm{23}}^1\times {\mathrm{1831}}^1$

素因数の和:1872

約数の個数: 40

約数和(自身を含む): 44979264

約数和(自身を除く): 23417408

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 64, 92, 128, 184, 256, 368, 512, 736, 1472, 1831, 2944, 3662, 5888, 7324, 11776, 14648, 29296, 42113, 58592, 84226, 117184, 168452, 234368, 336904, 468736, 673808, 937472, 1347616, 2695232, 5390464, 10780928, 21561856]

約数ペア:

[(1, 21561856), (2, 10780928), (4, 5390464), (8, 2695232), (16, 1347616), (23, 937472), (32, 673808), (46, 468736), (64, 336904), (92, 234368), (128, 168452), (184, 117184), (256, 84226), (368, 58592), (512, 42113), (736, 29296), (1472, 14648), (1831, 11776), (2944, 7324), (3662, 5888)]