20706868

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{349}}^1$

素因数の和:536

約数の個数: 48

約数和(自身を含む): 45001600

約数和(自身を除く): 24294732

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 163, 182, 326, 349, 364, 652, 698, 1141, 1396, 2119, 2282, 2443, 4238, 4537, 4564, 4886, 8476, 9074, 9772, 14833, 18148, 29666, 31759, 56887, 59332, 63518, 113774, 127036, 227548, 398209, 739531, 796418, 1479062, 1592836, 2958124, 5176717, 10353434, 20706868]

約数ペア:

[(1, 20706868), (2, 10353434), (4, 5176717), (7, 2958124), (13, 1592836), (14, 1479062), (26, 796418), (28, 739531), (52, 398209), (91, 227548), (163, 127036), (182, 113774), (326, 63518), (349, 59332), (364, 56887), (652, 31759), (698, 29666), (1141, 18148), (1396, 14833), (2119, 9772), (2282, 9074), (2443, 8476), (4238, 4886), (4537, 4564)]