20778216

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{401}}^1$

素因数の和:554

約数の個数: 64

約数和(自身を含む): 55572480

約数和(自身を除く): 34794264

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 127, 136, 204, 254, 381, 401, 408, 508, 762, 802, 1016, 1203, 1524, 1604, 2159, 2406, 3048, 3208, 4318, 4812, 6477, 6817, 8636, 9624, 12954, 13634, 17272, 20451, 25908, 27268, 40902, 50927, 51816, 54536, 81804, 101854, 152781, 163608, 203708, 305562, 407416, 611124, 865759, 1222248, 1731518, 2597277, 3463036, 5194554, 6926072, 10389108, 20778216]

約数ペア:

[(1, 20778216), (2, 10389108), (3, 6926072), (4, 5194554), (6, 3463036), (8, 2597277), (12, 1731518), (17, 1222248), (24, 865759), (34, 611124), (51, 407416), (68, 305562), (102, 203708), (127, 163608), (136, 152781), (204, 101854), (254, 81804), (381, 54536), (401, 51816), (408, 50927), (508, 40902), (762, 27268), (802, 25908), (1016, 20451), (1203, 17272), (1524, 13634), (1604, 12954), (2159, 9624), (2406, 8636), (3048, 6817), (3208, 6477), (4318, 4812)]