28005180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{509}}^1$

素因数の和:659

約数の個数: 96

約数和(自身を含む): 90478080

約数和(自身を除く): 62472900

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 131, 140, 210, 262, 393, 420, 509, 524, 655, 786, 917, 1018, 1310, 1527, 1572, 1834, 1965, 2036, 2545, 2620, 2751, 3054, 3563, 3668, 3930, 4585, 5090, 5502, 6108, 7126, 7635, 7860, 9170, 10180, 10689, 11004, 13755, 14252, 15270, 17815, 18340, 21378, 27510, 30540, 35630, 42756, 53445, 55020, 66679, 71260, 106890, 133358, 200037, 213780, 266716, 333395, 400074, 466753, 666790, 800148, 933506, 1000185, 1333580, 1400259, 1867012, 2000370, 2333765, 2800518, 4000740, 4667530, 5601036, 7001295, 9335060, 14002590, 28005180]

約数ペア:

[(1, 28005180), (2, 14002590), (3, 9335060), (4, 7001295), (5, 5601036), (6, 4667530), (7, 4000740), (10, 2800518), (12, 2333765), (14, 2000370), (15, 1867012), (20, 1400259), (21, 1333580), (28, 1000185), (30, 933506), (35, 800148), (42, 666790), (60, 466753), (70, 400074), (84, 333395), (105, 266716), (131, 213780), (140, 200037), (210, 133358), (262, 106890), (393, 71260), (420, 66679), (509, 55020), (524, 53445), (655, 42756), (786, 35630), (917, 30540), (1018, 27510), (1310, 21378), (1527, 18340), (1572, 17815), (1834, 15270), (1965, 14252), (2036, 13755), (2545, 11004), (2620, 10689), (2751, 10180), (3054, 9170), (3563, 7860), (3668, 7635), (3930, 7126), (4585, 6108), (5090, 5502)]