19833320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{887}}^1$

素因数の和:954

約数の個数: 64

約数和(自身を含む): 49230720

約数和(自身を除く): 29397400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 430, 520, 559, 860, 887, 1118, 1720, 1774, 2236, 2795, 3548, 4435, 4472, 5590, 7096, 8870, 11180, 11531, 17740, 22360, 23062, 35480, 38141, 46124, 57655, 76282, 92248, 115310, 152564, 190705, 230620, 305128, 381410, 461240, 495833, 762820, 991666, 1525640, 1983332, 2479165, 3966664, 4958330, 9916660, 19833320]

約数ペア:

[(1, 19833320), (2, 9916660), (4, 4958330), (5, 3966664), (8, 2479165), (10, 1983332), (13, 1525640), (20, 991666), (26, 762820), (40, 495833), (43, 461240), (52, 381410), (65, 305128), (86, 230620), (104, 190705), (130, 152564), (172, 115310), (215, 92248), (260, 76282), (344, 57655), (430, 46124), (520, 38141), (559, 35480), (860, 23062), (887, 22360), (1118, 17740), (1720, 11531), (1774, 11180), (2236, 8870), (2795, 7096), (3548, 5590), (4435, 4472)]