21256314716

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{242309}}^1$

素因数の和:242574

約数の個数: 48

約数和(自身を含む): 45972991680

約数和(自身を除く): 24716676964

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 241, 364, 482, 964, 1687, 3133, 3374, 6266, 6748, 12532, 21931, 43862, 87724, 242309, 484618, 969236, 1696163, 3150017, 3392326, 6300034, 6784652, 12600068, 22050119, 44100238, 58396469, 88200476, 116792938, 233585876, 408775283, 759154097, 817550566, 1518308194, 1635101132, 3036616388, 5314078679, 10628157358, 21256314716]

約数ペア:

[(1, 21256314716), (2, 10628157358), (4, 5314078679), (7, 3036616388), (13, 1635101132), (14, 1518308194), (26, 817550566), (28, 759154097), (52, 408775283), (91, 233585876), (182, 116792938), (241, 88200476), (364, 58396469), (482, 44100238), (964, 22050119), (1687, 12600068), (3133, 6784652), (3374, 6300034), (6266, 3392326), (6748, 3150017), (12532, 1696163), (21931, 969236), (43862, 484618), (87724, 242309)]