20869160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{599}}^1$

素因数の和:690

約数の個数: 64

約数和(自身を含む): 51408000

約数和(自身を除く): 30538840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 67, 104, 130, 134, 260, 268, 335, 520, 536, 599, 670, 871, 1198, 1340, 1742, 2396, 2680, 2995, 3484, 4355, 4792, 5990, 6968, 7787, 8710, 11980, 15574, 17420, 23960, 31148, 34840, 38935, 40133, 62296, 77870, 80266, 155740, 160532, 200665, 311480, 321064, 401330, 521729, 802660, 1043458, 1605320, 2086916, 2608645, 4173832, 5217290, 10434580, 20869160]

約数ペア:

[(1, 20869160), (2, 10434580), (4, 5217290), (5, 4173832), (8, 2608645), (10, 2086916), (13, 1605320), (20, 1043458), (26, 802660), (40, 521729), (52, 401330), (65, 321064), (67, 311480), (104, 200665), (130, 160532), (134, 155740), (260, 80266), (268, 77870), (335, 62296), (520, 40133), (536, 38935), (599, 34840), (670, 31148), (871, 23960), (1198, 17420), (1340, 15574), (1742, 11980), (2396, 8710), (2680, 7787), (2995, 6968), (3484, 5990), (4355, 4792)]