28206780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{281}}^1$

素因数の和:539

約数の個数: 96

約数和(自身を含む): 90961920

約数和(自身を除く): 62755140

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 239, 281, 420, 478, 562, 717, 843, 956, 1124, 1195, 1405, 1434, 1673, 1686, 1967, 2390, 2810, 2868, 3346, 3372, 3585, 3934, 4215, 4780, 5019, 5620, 5901, 6692, 7170, 7868, 8365, 8430, 9835, 10038, 11802, 14340, 16730, 16860, 19670, 20076, 23604, 25095, 29505, 33460, 39340, 50190, 59010, 67159, 100380, 118020, 134318, 201477, 268636, 335795, 402954, 470113, 671590, 805908, 940226, 1007385, 1343180, 1410339, 1880452, 2014770, 2350565, 2820678, 4029540, 4701130, 5641356, 7051695, 9402260, 14103390, 28206780]

約数ペア:

[(1, 28206780), (2, 14103390), (3, 9402260), (4, 7051695), (5, 5641356), (6, 4701130), (7, 4029540), (10, 2820678), (12, 2350565), (14, 2014770), (15, 1880452), (20, 1410339), (21, 1343180), (28, 1007385), (30, 940226), (35, 805908), (42, 671590), (60, 470113), (70, 402954), (84, 335795), (105, 268636), (140, 201477), (210, 134318), (239, 118020), (281, 100380), (420, 67159), (478, 59010), (562, 50190), (717, 39340), (843, 33460), (956, 29505), (1124, 25095), (1195, 23604), (1405, 20076), (1434, 19670), (1673, 16860), (1686, 16730), (1967, 14340), (2390, 11802), (2810, 10038), (2868, 9835), (3346, 8430), (3372, 8365), (3585, 7868), (3934, 7170), (4215, 6692), (4780, 5901), (5019, 5620)]