20872720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23719}}^1$

素因数の和:23743

約数の個数: 40

約数和(自身を含む): 52943040

約数和(自身を除く): 32070320

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23719, 47438, 94876, 118595, 189752, 237190, 260909, 379504, 474380, 521818, 948760, 1043636, 1304545, 1897520, 2087272, 2609090, 4174544, 5218180, 10436360, 20872720]

約数ペア:

[(1, 20872720), (2, 10436360), (4, 5218180), (5, 4174544), (8, 2609090), (10, 2087272), (11, 1897520), (16, 1304545), (20, 1043636), (22, 948760), (40, 521818), (44, 474380), (55, 379504), (80, 260909), (88, 237190), (110, 189752), (176, 118595), (220, 94876), (440, 47438), (880, 23719)]