858453880

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{221251}}^1$

素因数の和:221359

約数の個数: 32

約数和(自身を含む): 1951442640

約数和(自身を除く): 1092988760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 221251, 442502, 885004, 1106255, 1770008, 2212510, 4425020, 8850040, 21461347, 42922694, 85845388, 107306735, 171690776, 214613470, 429226940, 858453880]

約数ペア:

[(1, 858453880), (2, 429226940), (4, 214613470), (5, 171690776), (8, 107306735), (10, 85845388), (20, 42922694), (40, 21461347), (97, 8850040), (194, 4425020), (388, 2212510), (485, 1770008), (776, 1106255), (970, 885004), (1940, 442502), (3880, 221251)]