20863821

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 10654899

約数列:

[1, 3, 11, 33, 53, 79, 151, 159, 237, 453, 583, 869, 1661, 1749, 2607, 4187, 4983, 8003, 11929, 12561, 24009, 35787, 46057, 88033, 131219, 138171, 264099, 393657, 632237, 1896711, 6954607, 20863821]

約数ペア:

[(1, 20863821), (3, 6954607), (11, 1896711), (33, 632237), (53, 393657), (79, 264099), (151, 138171), (159, 131219), (237, 88033), (453, 46057), (583, 35787), (869, 24009), (1661, 12561), (1749, 11929), (2607, 8003), (4187, 4983)]