20958064

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{971}}^1$

素因数の和:1069

約数の個数: 40

約数和(自身を含む): 43390080

約数和(自身を除く): 22432016

約数列:

[1, 2, 4, 8, 16, 19, 38, 71, 76, 142, 152, 284, 304, 568, 971, 1136, 1349, 1942, 2698, 3884, 5396, 7768, 10792, 15536, 18449, 21584, 36898, 68941, 73796, 137882, 147592, 275764, 295184, 551528, 1103056, 1309879, 2619758, 5239516, 10479032, 20958064]

約数ペア:

[(1, 20958064), (2, 10479032), (4, 5239516), (8, 2619758), (16, 1309879), (19, 1103056), (38, 551528), (71, 295184), (76, 275764), (142, 147592), (152, 137882), (284, 73796), (304, 68941), (568, 36898), (971, 21584), (1136, 18449), (1349, 15536), (1942, 10792), (2698, 7768), (3884, 5396)]