21586760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41513}}^1$

素因数の和:41537

約数の個数: 32

約数和(自身を含む): 52307640

約数和(自身を除く): 30720880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41513, 83026, 166052, 207565, 332104, 415130, 539669, 830260, 1079338, 1660520, 2158676, 2698345, 4317352, 5396690, 10793380, 21586760]

約数ペア:

[(1, 21586760), (2, 10793380), (4, 5396690), (5, 4317352), (8, 2698345), (10, 2158676), (13, 1660520), (20, 1079338), (26, 830260), (40, 539669), (52, 415130), (65, 332104), (104, 207565), (130, 166052), (260, 83026), (520, 41513)]