21019996

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{1303}}^1$

素因数の和:1453

約数の個数: 24

約数和(自身を含む): 38155040

約数和(自身を除く): 17135044

約数列:

[1, 2, 4, 37, 74, 109, 148, 218, 436, 1303, 2606, 4033, 5212, 8066, 16132, 48211, 96422, 142027, 192844, 284054, 568108, 5254999, 10509998, 21019996]

約数ペア:

[(1, 21019996), (2, 10509998), (4, 5254999), (37, 568108), (74, 284054), (109, 192844), (148, 142027), (218, 96422), (436, 48211), (1303, 16132), (2606, 8066), (4033, 5212)]