21762940

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 47124000

約数和(自身を除く): 25361060

約数列:

[1, 2, 4, 5, 10, 20, 67, 109, 134, 149, 218, 268, 298, 335, 436, 545, 596, 670, 745, 1090, 1340, 1490, 2180, 2980, 7303, 9983, 14606, 16241, 19966, 29212, 32482, 36515, 39932, 49915, 64964, 73030, 81205, 99830, 146060, 162410, 199660, 324820, 1088147, 2176294, 4352588, 5440735, 10881470, 21762940]

約数ペア:

[(1, 21762940), (2, 10881470), (4, 5440735), (5, 4352588), (10, 2176294), (20, 1088147), (67, 324820), (109, 199660), (134, 162410), (149, 146060), (218, 99830), (268, 81205), (298, 73030), (335, 64964), (436, 49915), (545, 39932), (596, 36515), (670, 32482), (745, 29212), (1090, 19966), (1340, 16241), (1490, 14606), (2180, 9983), (2980, 7303)]