280056580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{79}}^1\times {\mathrm{491}}^1$

素因数の和:617

約数の個数: 72

約数和(自身を含む): 629838720

約数和(自身を除く): 349782140

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 79, 95, 158, 190, 316, 361, 380, 395, 491, 722, 790, 982, 1444, 1501, 1580, 1805, 1964, 2455, 3002, 3610, 4910, 6004, 7220, 7505, 9329, 9820, 15010, 18658, 28519, 30020, 37316, 38789, 46645, 57038, 77578, 93290, 114076, 142595, 155156, 177251, 186580, 193945, 285190, 354502, 387890, 570380, 709004, 736991, 775780, 886255, 1473982, 1772510, 2947964, 3545020, 3684955, 7369910, 14002829, 14739820, 28005658, 56011316, 70014145, 140028290, 280056580]

約数ペア:

[(1, 280056580), (2, 140028290), (4, 70014145), (5, 56011316), (10, 28005658), (19, 14739820), (20, 14002829), (38, 7369910), (76, 3684955), (79, 3545020), (95, 2947964), (158, 1772510), (190, 1473982), (316, 886255), (361, 775780), (380, 736991), (395, 709004), (491, 570380), (722, 387890), (790, 354502), (982, 285190), (1444, 193945), (1501, 186580), (1580, 177251), (1805, 155156), (1964, 142595), (2455, 114076), (3002, 93290), (3610, 77578), (4910, 57038), (6004, 46645), (7220, 38789), (7505, 37316), (9329, 30020), (9820, 28519), (15010, 18658)]