21391966

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{6959}}^1$

素因数の和:7043

約数の個数: 16

約数和(自身を含む): 33825600

約数和(自身を除く): 12433634

約数列:

[1, 2, 29, 53, 58, 106, 1537, 3074, 6959, 13918, 201811, 368827, 403622, 737654, 10695983, 21391966]

約数ペア:

[(1, 21391966), (2, 10695983), (29, 737654), (53, 403622), (58, 368827), (106, 201811), (1537, 13918), (3074, 6959)]