21295768

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{2111}}^1$

素因数の和:2227

約数の個数: 32

約数和(自身を含む): 43464960

約数和(自身を除く): 22169192

約数列:

[1, 2, 4, 8, 13, 26, 52, 97, 104, 194, 388, 776, 1261, 2111, 2522, 4222, 5044, 8444, 10088, 16888, 27443, 54886, 109772, 204767, 219544, 409534, 819068, 1638136, 2661971, 5323942, 10647884, 21295768]

約数ペア:

[(1, 21295768), (2, 10647884), (4, 5323942), (8, 2661971), (13, 1638136), (26, 819068), (52, 409534), (97, 219544), (104, 204767), (194, 109772), (388, 54886), (776, 27443), (1261, 16888), (2111, 10088), (2522, 8444), (4222, 5044)]