80257520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{397}}^1$

素因数の和:455

約数の個数: 120

約数和(自身を含む): 225637344

約数和(自身を除く): 145379824

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 304, 361, 380, 397, 532, 560, 665, 722, 760, 794, 1064, 1330, 1444, 1520, 1588, 1805, 1985, 2128, 2527, 2660, 2779, 2888, 3176, 3610, 3970, 5054, 5320, 5558, 5776, 6352, 7220, 7543, 7940, 10108, 10640, 11116, 12635, 13895, 14440, 15086, 15880, 20216, 22232, 25270, 27790, 28880, 30172, 31760, 37715, 40432, 44464, 50540, 52801, 55580, 60344, 75430, 101080, 105602, 111160, 120688, 143317, 150860, 202160, 211204, 222320, 264005, 286634, 301720, 422408, 528010, 573268, 603440, 716585, 844816, 1003219, 1056020, 1146536, 1433170, 2006438, 2112040, 2293072, 2866340, 4012876, 4224080, 5016095, 5732680, 8025752, 10032190, 11465360, 16051504, 20064380, 40128760, 80257520]

約数ペア:

[(1, 80257520), (2, 40128760), (4, 20064380), (5, 16051504), (7, 11465360), (8, 10032190), (10, 8025752), (14, 5732680), (16, 5016095), (19, 4224080), (20, 4012876), (28, 2866340), (35, 2293072), (38, 2112040), (40, 2006438), (56, 1433170), (70, 1146536), (76, 1056020), (80, 1003219), (95, 844816), (112, 716585), (133, 603440), (140, 573268), (152, 528010), (190, 422408), (266, 301720), (280, 286634), (304, 264005), (361, 222320), (380, 211204), (397, 202160), (532, 150860), (560, 143317), (665, 120688), (722, 111160), (760, 105602), (794, 101080), (1064, 75430), (1330, 60344), (1444, 55580), (1520, 52801), (1588, 50540), (1805, 44464), (1985, 40432), (2128, 37715), (2527, 31760), (2660, 30172), (2779, 28880), (2888, 27790), (3176, 25270), (3610, 22232), (3970, 20216), (5054, 15880), (5320, 15086), (5558, 14440), (5776, 13895), (6352, 12635), (7220, 11116), (7543, 10640), (7940, 10108)]