9919240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:206

約数の個数: 64

約数和(自身を含む): 23443200

約数和(自身を除く): 13523960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 73, 79, 86, 146, 158, 172, 215, 292, 316, 344, 365, 395, 430, 584, 632, 730, 790, 860, 1460, 1580, 1720, 2920, 3139, 3160, 3397, 5767, 6278, 6794, 11534, 12556, 13588, 15695, 16985, 23068, 25112, 27176, 28835, 31390, 33970, 46136, 57670, 62780, 67940, 115340, 125560, 135880, 230680, 247981, 495962, 991924, 1239905, 1983848, 2479810, 4959620, 9919240]

約数ペア:

[(1, 9919240), (2, 4959620), (4, 2479810), (5, 1983848), (8, 1239905), (10, 991924), (20, 495962), (40, 247981), (43, 230680), (73, 135880), (79, 125560), (86, 115340), (146, 67940), (158, 62780), (172, 57670), (215, 46136), (292, 33970), (316, 31390), (344, 28835), (365, 27176), (395, 25112), (430, 23068), (584, 16985), (632, 15695), (730, 13588), (790, 12556), (860, 11534), (1460, 6794), (1580, 6278), (1720, 5767), (2920, 3397), (3139, 3160)]