18820420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{877}}^1$

素因数の和:952

約数の個数: 48

約数和(自身を含む): 42038640

約数和(自身を除く): 23218220

約数列:

[1, 2, 4, 5, 10, 20, 29, 37, 58, 74, 116, 145, 148, 185, 290, 370, 580, 740, 877, 1073, 1754, 2146, 3508, 4292, 4385, 5365, 8770, 10730, 17540, 21460, 25433, 32449, 50866, 64898, 101732, 127165, 129796, 162245, 254330, 324490, 508660, 648980, 941021, 1882042, 3764084, 4705105, 9410210, 18820420]

約数ペア:

[(1, 18820420), (2, 9410210), (4, 4705105), (5, 3764084), (10, 1882042), (20, 941021), (29, 648980), (37, 508660), (58, 324490), (74, 254330), (116, 162245), (145, 129796), (148, 127165), (185, 101732), (290, 64898), (370, 50866), (580, 32449), (740, 25433), (877, 21460), (1073, 17540), (1754, 10730), (2146, 8770), (3508, 5365), (4292, 4385)]