20410020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{761}}^1$

素因数の和:925

約数の個数: 72

約数和(自身を含む): 62407800

約数和(自身を除く): 41997780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 149, 180, 298, 447, 596, 745, 761, 894, 1341, 1490, 1522, 1788, 2235, 2283, 2682, 2980, 3044, 3805, 4470, 4566, 5364, 6705, 6849, 7610, 8940, 9132, 11415, 13410, 13698, 15220, 22830, 26820, 27396, 34245, 45660, 68490, 113389, 136980, 226778, 340167, 453556, 566945, 680334, 1020501, 1133890, 1360668, 1700835, 2041002, 2267780, 3401670, 4082004, 5102505, 6803340, 10205010, 20410020]

約数ペア:

[(1, 20410020), (2, 10205010), (3, 6803340), (4, 5102505), (5, 4082004), (6, 3401670), (9, 2267780), (10, 2041002), (12, 1700835), (15, 1360668), (18, 1133890), (20, 1020501), (30, 680334), (36, 566945), (45, 453556), (60, 340167), (90, 226778), (149, 136980), (180, 113389), (298, 68490), (447, 45660), (596, 34245), (745, 27396), (761, 26820), (894, 22830), (1341, 15220), (1490, 13698), (1522, 13410), (1788, 11415), (2235, 9132), (2283, 8940), (2682, 7610), (2980, 6849), (3044, 6705), (3805, 5364), (4470, 4566)]