81421020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4003}}^1$

素因数の和:4131

約数の個数: 72

約数和(自身を含む): 249224976

約数和(自身を除く): 167803956

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 113, 180, 226, 339, 452, 565, 678, 1017, 1130, 1356, 1695, 2034, 2260, 3390, 4003, 4068, 5085, 6780, 8006, 10170, 12009, 16012, 20015, 20340, 24018, 36027, 40030, 48036, 60045, 72054, 80060, 120090, 144108, 180135, 240180, 360270, 452339, 720540, 904678, 1357017, 1809356, 2261695, 2714034, 4071051, 4523390, 5428068, 6785085, 8142102, 9046780, 13570170, 16284204, 20355255, 27140340, 40710510, 81421020]

約数ペア:

[(1, 81421020), (2, 40710510), (3, 27140340), (4, 20355255), (5, 16284204), (6, 13570170), (9, 9046780), (10, 8142102), (12, 6785085), (15, 5428068), (18, 4523390), (20, 4071051), (30, 2714034), (36, 2261695), (45, 1809356), (60, 1357017), (90, 904678), (113, 720540), (180, 452339), (226, 360270), (339, 240180), (452, 180135), (565, 144108), (678, 120090), (1017, 80060), (1130, 72054), (1356, 60045), (1695, 48036), (2034, 40030), (2260, 36027), (3390, 24018), (4003, 20340), (4068, 20015), (5085, 16012), (6780, 12009), (8006, 10170)]