2017780020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{110989}}^1$

素因数の和:111105

約数の個数: 72

約数和(自身を含む): 6181255080

約数和(自身を除く): 4163475060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 101, 180, 202, 303, 404, 505, 606, 909, 1010, 1212, 1515, 1818, 2020, 3030, 3636, 4545, 6060, 9090, 18180, 110989, 221978, 332967, 443956, 554945, 665934, 998901, 1109890, 1331868, 1664835, 1997802, 2219780, 3329670, 3995604, 4994505, 6659340, 9989010, 11209889, 19978020, 22419778, 33629667, 44839556, 56049445, 67259334, 100889001, 112098890, 134518668, 168148335, 201778002, 224197780, 336296670, 403556004, 504445005, 672593340, 1008890010, 2017780020]

約数ペア:

[(1, 2017780020), (2, 1008890010), (3, 672593340), (4, 504445005), (5, 403556004), (6, 336296670), (9, 224197780), (10, 201778002), (12, 168148335), (15, 134518668), (18, 112098890), (20, 100889001), (30, 67259334), (36, 56049445), (45, 44839556), (60, 33629667), (90, 22419778), (101, 19978020), (180, 11209889), (202, 9989010), (303, 6659340), (404, 4994505), (505, 3995604), (606, 3329670), (909, 2219780), (1010, 1997802), (1212, 1664835), (1515, 1331868), (1818, 1109890), (2020, 998901), (3030, 665934), (3636, 554945), (4545, 443956), (6060, 332967), (9090, 221978), (18180, 110989)]