21986390

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{877}}^1$

素因数の和:1016

約数の個数: 32

約数和(自身を含む): 41722560

約数和(自身を除く): 19736170

約数列:

[1, 2, 5, 10, 23, 46, 109, 115, 218, 230, 545, 877, 1090, 1754, 2507, 4385, 5014, 8770, 12535, 20171, 25070, 40342, 95593, 100855, 191186, 201710, 477965, 955930, 2198639, 4397278, 10993195, 21986390]

約数ペア:

[(1, 21986390), (2, 10993195), (5, 4397278), (10, 2198639), (23, 955930), (46, 477965), (109, 201710), (115, 191186), (218, 100855), (230, 95593), (545, 40342), (877, 25070), (1090, 20171), (1754, 12535), (2507, 8770), (4385, 5014)]