21568986

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{983}}^1$

素因数の和:1067

約数の個数: 48

約数和(自身を含む): 49735296

約数和(自身を除く): 28166310

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 53, 69, 106, 138, 159, 207, 318, 414, 477, 954, 983, 1219, 1966, 2438, 2949, 3657, 5898, 7314, 8847, 10971, 17694, 21942, 22609, 45218, 52099, 67827, 104198, 135654, 156297, 203481, 312594, 406962, 468891, 937782, 1198277, 2396554, 3594831, 7189662, 10784493, 21568986]

約数ペア:

[(1, 21568986), (2, 10784493), (3, 7189662), (6, 3594831), (9, 2396554), (18, 1198277), (23, 937782), (46, 468891), (53, 406962), (69, 312594), (106, 203481), (138, 156297), (159, 135654), (207, 104198), (318, 67827), (414, 52099), (477, 45218), (954, 22609), (983, 21942), (1219, 17694), (1966, 10971), (2438, 8847), (2949, 7314), (3657, 5898)]