30805580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1087}}^1$

素因数の和:1218

約数の個数: 48

約数和(自身を含む): 70371840

約数和(自身を除く): 39566260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 1087, 1090, 1417, 2174, 2180, 2834, 4348, 5435, 5668, 7085, 10870, 14131, 14170, 21740, 28262, 28340, 56524, 70655, 118483, 141310, 236966, 282620, 473932, 592415, 1184830, 1540279, 2369660, 3080558, 6161116, 7701395, 15402790, 30805580]

約数ペア:

[(1, 30805580), (2, 15402790), (4, 7701395), (5, 6161116), (10, 3080558), (13, 2369660), (20, 1540279), (26, 1184830), (52, 592415), (65, 473932), (109, 282620), (130, 236966), (218, 141310), (260, 118483), (436, 70655), (545, 56524), (1087, 28340), (1090, 28262), (1417, 21740), (2174, 14170), (2180, 14131), (2834, 10870), (4348, 7085), (5435, 5668)]