21167180

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 46066944

約数和(自身を除く): 24899764

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 151, 163, 172, 215, 302, 326, 430, 604, 652, 755, 815, 860, 1510, 1630, 3020, 3260, 6493, 7009, 12986, 14018, 24613, 25972, 28036, 32465, 35045, 49226, 64930, 70090, 98452, 123065, 129860, 140180, 246130, 492260, 1058359, 2116718, 4233436, 5291795, 10583590, 21167180]

約数ペア:

[(1, 21167180), (2, 10583590), (4, 5291795), (5, 4233436), (10, 2116718), (20, 1058359), (43, 492260), (86, 246130), (151, 140180), (163, 129860), (172, 123065), (215, 98452), (302, 70090), (326, 64930), (430, 49226), (604, 35045), (652, 32465), (755, 28036), (815, 25972), (860, 24613), (1510, 14018), (1630, 12986), (3020, 7009), (3260, 6493)]