20764718

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{431}}^1$

素因数の和:572

約数の個数: 32

約数和(自身を含む): 35925120

約数和(自身を除く): 15160402

約数列:

[1, 2, 13, 17, 26, 34, 109, 218, 221, 431, 442, 862, 1417, 1853, 2834, 3706, 5603, 7327, 11206, 14654, 24089, 46979, 48178, 93958, 95251, 190502, 610727, 798643, 1221454, 1597286, 10382359, 20764718]

約数ペア:

[(1, 20764718), (2, 10382359), (13, 1597286), (17, 1221454), (26, 798643), (34, 610727), (109, 190502), (218, 95251), (221, 93958), (431, 48178), (442, 46979), (862, 24089), (1417, 14654), (1853, 11206), (2834, 7327), (3706, 5603)]