20163342220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{260441}}^1$

素因数の和:260543

約数の個数: 72

約数和(自身を含む): 49879851840

約数和(自身を除く): 29716509620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 79, 98, 140, 158, 196, 245, 316, 395, 490, 553, 790, 980, 1106, 1580, 2212, 2765, 3871, 5530, 7742, 11060, 15484, 19355, 38710, 77420, 260441, 520882, 1041764, 1302205, 1823087, 2604410, 3646174, 5208820, 7292348, 9115435, 12761609, 18230870, 20574839, 25523218, 36461740, 41149678, 51046436, 63808045, 82299356, 102874195, 127616090, 144023873, 205748390, 255232180, 288047746, 411496780, 576095492, 720119365, 1008167111, 1440238730, 2016334222, 2880477460, 4032668444, 5040835555, 10081671110, 20163342220]

約数ペア:

[(1, 20163342220), (2, 10081671110), (4, 5040835555), (5, 4032668444), (7, 2880477460), (10, 2016334222), (14, 1440238730), (20, 1008167111), (28, 720119365), (35, 576095492), (49, 411496780), (70, 288047746), (79, 255232180), (98, 205748390), (140, 144023873), (158, 127616090), (196, 102874195), (245, 82299356), (316, 63808045), (395, 51046436), (490, 41149678), (553, 36461740), (790, 25523218), (980, 20574839), (1106, 18230870), (1580, 12761609), (2212, 9115435), (2765, 7292348), (3871, 5208820), (5530, 3646174), (7742, 2604410), (11060, 1823087), (15484, 1302205), (19355, 1041764), (38710, 520882), (77420, 260441)]