18222620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{643}}^1$

素因数の和:774

約数の個数: 48

約数和(自身を含む): 41653920

約数和(自身を除く): 23431300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 643, 1090, 1286, 1417, 2180, 2572, 2834, 3215, 5668, 6430, 7085, 8359, 12860, 14170, 16718, 28340, 33436, 41795, 70087, 83590, 140174, 167180, 280348, 350435, 700870, 911131, 1401740, 1822262, 3644524, 4555655, 9111310, 18222620]

約数ペア:

[(1, 18222620), (2, 9111310), (4, 4555655), (5, 3644524), (10, 1822262), (13, 1401740), (20, 911131), (26, 700870), (52, 350435), (65, 280348), (109, 167180), (130, 140174), (218, 83590), (260, 70087), (436, 41795), (545, 33436), (643, 28340), (1090, 16718), (1286, 14170), (1417, 12860), (2180, 8359), (2572, 7085), (2834, 6430), (3215, 5668)]