18220592

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{349}}^1$

素因数の和:621

約数の個数: 40

約数和(自身を含む): 38278800

約数和(自身を除く): 20058208

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 251, 349, 502, 698, 1004, 1396, 2008, 2792, 3263, 4016, 4537, 5584, 6526, 9074, 13052, 18148, 26104, 36296, 52208, 72592, 87599, 175198, 350396, 700792, 1138787, 1401584, 2277574, 4555148, 9110296, 18220592]

約数ペア:

[(1, 18220592), (2, 9110296), (4, 4555148), (8, 2277574), (13, 1401584), (16, 1138787), (26, 700792), (52, 350396), (104, 175198), (208, 87599), (251, 72592), (349, 52208), (502, 36296), (698, 26104), (1004, 18148), (1396, 13052), (2008, 9074), (2792, 6526), (3263, 5584), (4016, 4537)]