7898020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{821}}^1$

素因数の和:880

約数の個数: 48

約数和(自身を含む): 18366768

約数和(自身を除く): 10468748

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 821, 962, 1642, 1924, 2405, 3284, 4105, 4810, 8210, 9620, 10673, 16420, 21346, 30377, 42692, 53365, 60754, 106730, 121508, 151885, 213460, 303770, 394901, 607540, 789802, 1579604, 1974505, 3949010, 7898020]

約数ペア:

[(1, 7898020), (2, 3949010), (4, 1974505), (5, 1579604), (10, 789802), (13, 607540), (20, 394901), (26, 303770), (37, 213460), (52, 151885), (65, 121508), (74, 106730), (130, 60754), (148, 53365), (185, 42692), (260, 30377), (370, 21346), (481, 16420), (740, 10673), (821, 9620), (962, 8210), (1642, 4810), (1924, 4105), (2405, 3284)]