81236475

素因数分解:

$3^2\times 5^2\times {\mathrm{173}}^1\times {\mathrm{2087}}^1$

素因数の和:2276

約数の個数: 36

約数和(自身を含む): 146414736

約数和(自身を除く): 65178261

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 173, 225, 519, 865, 1557, 2087, 2595, 4325, 6261, 7785, 10435, 12975, 18783, 31305, 38925, 52175, 93915, 156525, 361051, 469575, 1083153, 1805255, 3249459, 5415765, 9026275, 16247295, 27078825, 81236475]

約数ペア:

[(1, 81236475), (3, 27078825), (5, 16247295), (9, 9026275), (15, 5415765), (25, 3249459), (45, 1805255), (75, 1083153), (173, 469575), (225, 361051), (519, 156525), (865, 93915), (1557, 52175), (2087, 38925), (2595, 31305), (4325, 18783), (6261, 12975), (7785, 10435)]