21057322

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:175

約数の個数: 64

約数和(自身を含む): 40497408

約数和(自身を除く): 19440086

約数列:

[1, 2, 11, 13, 17, 22, 26, 34, 61, 71, 122, 142, 143, 187, 221, 286, 374, 442, 671, 781, 793, 923, 1037, 1207, 1342, 1562, 1586, 1846, 2074, 2414, 2431, 4331, 4862, 8662, 8723, 10153, 11407, 13277, 13481, 15691, 17446, 20306, 22814, 26554, 26962, 31382, 47641, 56303, 73627, 95282, 112606, 147254, 148291, 172601, 296582, 345202, 619333, 809897, 957151, 1238666, 1619794, 1914302, 10528661, 21057322]

約数ペア:

[(1, 21057322), (2, 10528661), (11, 1914302), (13, 1619794), (17, 1238666), (22, 957151), (26, 809897), (34, 619333), (61, 345202), (71, 296582), (122, 172601), (142, 148291), (143, 147254), (187, 112606), (221, 95282), (286, 73627), (374, 56303), (442, 47641), (671, 31382), (781, 26962), (793, 26554), (923, 22814), (1037, 20306), (1207, 17446), (1342, 15691), (1562, 13481), (1586, 13277), (1846, 11407), (2074, 10153), (2414, 8723), (2431, 8662), (4331, 4862)]