21005612

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{349}}^1\times {\mathrm{367}}^1$

素因数の和:761

約数の個数: 24

約数和(自身を含む): 37867200

約数和(自身を除く): 16861588

約数列:

[1, 2, 4, 41, 82, 164, 349, 367, 698, 734, 1396, 1468, 14309, 15047, 28618, 30094, 57236, 60188, 128083, 256166, 512332, 5251403, 10502806, 21005612]

約数ペア:

[(1, 21005612), (2, 10502806), (4, 5251403), (41, 512332), (82, 256166), (164, 128083), (349, 60188), (367, 57236), (698, 30094), (734, 28618), (1396, 15047), (1468, 14309)]