20473750

素因数分解:

$2^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{1489}}^1$

素因数の和:1522

約数の個数: 40

約数和(自身を含む): 41892840

約数和(自身を除く): 21419090

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 250, 275, 550, 625, 1250, 1375, 1489, 2750, 2978, 6875, 7445, 13750, 14890, 16379, 32758, 37225, 74450, 81895, 163790, 186125, 372250, 409475, 818950, 930625, 1861250, 2047375, 4094750, 10236875, 20473750]

約数ペア:

[(1, 20473750), (2, 10236875), (5, 4094750), (10, 2047375), (11, 1861250), (22, 930625), (25, 818950), (50, 409475), (55, 372250), (110, 186125), (125, 163790), (250, 81895), (275, 74450), (550, 37225), (625, 32758), (1250, 16379), (1375, 14890), (1489, 13750), (2750, 7445), (2978, 6875)]