20530216

素因数分解:

$2^3\times 7^2\times {\mathrm{83}}^1\times {\mathrm{631}}^1$

素因数の和:734

約数の個数: 48

約数和(自身を含む): 45390240

約数和(自身を除く): 24860024

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 83, 98, 166, 196, 332, 392, 581, 631, 664, 1162, 1262, 2324, 2524, 4067, 4417, 4648, 5048, 8134, 8834, 16268, 17668, 30919, 32536, 35336, 52373, 61838, 104746, 123676, 209492, 247352, 366611, 418984, 733222, 1466444, 2566277, 2932888, 5132554, 10265108, 20530216]

約数ペア:

[(1, 20530216), (2, 10265108), (4, 5132554), (7, 2932888), (8, 2566277), (14, 1466444), (28, 733222), (49, 418984), (56, 366611), (83, 247352), (98, 209492), (166, 123676), (196, 104746), (332, 61838), (392, 52373), (581, 35336), (631, 32536), (664, 30919), (1162, 17668), (1262, 16268), (2324, 8834), (2524, 8134), (4067, 5048), (4417, 4648)]