20997628

素因数分解:

$2^2\times {\mathrm{59}}^1\times {\mathrm{193}}^1\times {\mathrm{461}}^1$

素因数の和:717

約数の個数: 24

約数和(自身を含む): 37643760

約数和(自身を除く): 16646132

約数列:

[1, 2, 4, 59, 118, 193, 236, 386, 461, 772, 922, 1844, 11387, 22774, 27199, 45548, 54398, 88973, 108796, 177946, 355892, 5249407, 10498814, 20997628]

約数ペア:

[(1, 20997628), (2, 10498814), (4, 5249407), (59, 355892), (118, 177946), (193, 108796), (236, 88973), (386, 54398), (461, 45548), (772, 27199), (922, 22774), (1844, 11387)]