21435920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{24359}}^1$

素因数の和:24383

約数の個数: 40

約数和(自身を含む): 54371520

約数和(自身を除く): 32935600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 24359, 48718, 97436, 121795, 194872, 243590, 267949, 389744, 487180, 535898, 974360, 1071796, 1339745, 1948720, 2143592, 2679490, 4287184, 5358980, 10717960, 21435920]

約数ペア:

[(1, 21435920), (2, 10717960), (4, 5358980), (5, 4287184), (8, 2679490), (10, 2143592), (11, 1948720), (16, 1339745), (20, 1071796), (22, 974360), (40, 535898), (44, 487180), (55, 389744), (80, 267949), (88, 243590), (110, 194872), (176, 121795), (220, 97436), (440, 48718), (880, 24359)]