904271920

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{719}}^1$

素因数の和:1010

約数の個数: 80

約数和(自身を含む): 2142720000

約数和(自身を除く): 1238448080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 199, 316, 395, 398, 632, 719, 790, 796, 995, 1264, 1438, 1580, 1592, 1990, 2876, 3160, 3184, 3595, 3980, 5752, 6320, 7190, 7960, 11504, 14380, 15721, 15920, 28760, 31442, 56801, 57520, 62884, 78605, 113602, 125768, 143081, 157210, 227204, 251536, 284005, 286162, 314420, 454408, 568010, 572324, 628840, 715405, 908816, 1136020, 1144648, 1257680, 1430810, 2272040, 2289296, 2861620, 4544080, 5723240, 11303399, 11446480, 22606798, 45213596, 56516995, 90427192, 113033990, 180854384, 226067980, 452135960, 904271920]

約数ペア:

[(1, 904271920), (2, 452135960), (4, 226067980), (5, 180854384), (8, 113033990), (10, 90427192), (16, 56516995), (20, 45213596), (40, 22606798), (79, 11446480), (80, 11303399), (158, 5723240), (199, 4544080), (316, 2861620), (395, 2289296), (398, 2272040), (632, 1430810), (719, 1257680), (790, 1144648), (796, 1136020), (995, 908816), (1264, 715405), (1438, 628840), (1580, 572324), (1592, 568010), (1990, 454408), (2876, 314420), (3160, 286162), (3184, 284005), (3595, 251536), (3980, 227204), (5752, 157210), (6320, 143081), (7190, 125768), (7960, 113602), (11504, 78605), (14380, 62884), (15721, 57520), (15920, 56801), (28760, 31442)]