20378718

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{619}}^1$

素因数の和:717

約数の個数: 48

約数和(自身を含む): 46425600

約数和(自身を除く): 26046882

約数列:

[1, 2, 3, 6, 9, 18, 31, 59, 62, 93, 118, 177, 186, 279, 354, 531, 558, 619, 1062, 1238, 1829, 1857, 3658, 3714, 5487, 5571, 10974, 11142, 16461, 19189, 32922, 36521, 38378, 57567, 73042, 109563, 115134, 172701, 219126, 328689, 345402, 657378, 1132151, 2264302, 3396453, 6792906, 10189359, 20378718]

約数ペア:

[(1, 20378718), (2, 10189359), (3, 6792906), (6, 3396453), (9, 2264302), (18, 1132151), (31, 657378), (59, 345402), (62, 328689), (93, 219126), (118, 172701), (177, 115134), (186, 109563), (279, 73042), (354, 57567), (531, 38378), (558, 36521), (619, 32922), (1062, 19189), (1238, 16461), (1829, 11142), (1857, 10974), (3658, 5571), (3714, 5487)]