20020005

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{29}}^2$

素因数の和:115

約数の個数: 54

約数和(自身を含む): 37569714

約数和(自身を除く): 17549709

約数列:

[1, 3, 5, 9, 15, 23, 29, 45, 69, 87, 115, 145, 207, 261, 345, 435, 529, 667, 841, 1035, 1305, 1587, 2001, 2523, 2645, 3335, 4205, 4761, 6003, 7569, 7935, 10005, 12615, 15341, 19343, 23805, 30015, 37845, 46023, 58029, 76705, 96715, 138069, 174087, 230115, 290145, 444889, 690345, 870435, 1334667, 2224445, 4004001, 6673335, 20020005]

約数ペア:

[(1, 20020005), (3, 6673335), (5, 4004001), (9, 2224445), (15, 1334667), (23, 870435), (29, 690345), (45, 444889), (69, 290145), (87, 230115), (115, 174087), (145, 138069), (207, 96715), (261, 76705), (345, 58029), (435, 46023), (529, 37845), (667, 30015), (841, 23805), (1035, 19343), (1305, 15341), (1587, 12615), (2001, 10005), (2523, 7935), (2645, 7569), (3335, 6003), (4205, 4761)]