30927320

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{17981}}^1$

素因数の和:18035

約数の個数: 32

約数和(自身を含む): 71208720

約数和(自身を除く): 40281400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 17981, 35962, 71924, 89905, 143848, 179810, 359620, 719240, 773183, 1546366, 3092732, 3865915, 6185464, 7731830, 15463660, 30927320]

約数ペア:

[(1, 30927320), (2, 15463660), (4, 7731830), (5, 6185464), (8, 3865915), (10, 3092732), (20, 1546366), (40, 773183), (43, 719240), (86, 359620), (172, 179810), (215, 143848), (344, 89905), (430, 71924), (860, 35962), (1720, 17981)]