13020920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{293}}^1$

素因数の和:416

約数の個数: 64

約数和(自身を含む): 32387040

約数和(自身を除く): 19366120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 202, 220, 293, 404, 440, 505, 586, 808, 1010, 1111, 1172, 1465, 2020, 2222, 2344, 2930, 3223, 4040, 4444, 5555, 5860, 6446, 8888, 11110, 11720, 12892, 16115, 22220, 25784, 29593, 32230, 44440, 59186, 64460, 118372, 128920, 147965, 236744, 295930, 325523, 591860, 651046, 1183720, 1302092, 1627615, 2604184, 3255230, 6510460, 13020920]

約数ペア:

[(1, 13020920), (2, 6510460), (4, 3255230), (5, 2604184), (8, 1627615), (10, 1302092), (11, 1183720), (20, 651046), (22, 591860), (40, 325523), (44, 295930), (55, 236744), (88, 147965), (101, 128920), (110, 118372), (202, 64460), (220, 59186), (293, 44440), (404, 32230), (440, 29593), (505, 25784), (586, 22220), (808, 16115), (1010, 12892), (1111, 11720), (1172, 11110), (1465, 8888), (2020, 6446), (2222, 5860), (2344, 5555), (2930, 4444), (3223, 4040)]