21866120

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{199}}^1$

素因数の和:318

約数の個数: 64

約数和(自身を含む): 51408000

約数和(自身を除く): 29541880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 67, 82, 134, 164, 199, 205, 268, 328, 335, 398, 410, 536, 670, 796, 820, 995, 1340, 1592, 1640, 1990, 2680, 2747, 3980, 5494, 7960, 8159, 10988, 13333, 13735, 16318, 21976, 26666, 27470, 32636, 40795, 53332, 54940, 65272, 66665, 81590, 106664, 109880, 133330, 163180, 266660, 326360, 533320, 546653, 1093306, 2186612, 2733265, 4373224, 5466530, 10933060, 21866120]

約数ペア:

[(1, 21866120), (2, 10933060), (4, 5466530), (5, 4373224), (8, 2733265), (10, 2186612), (20, 1093306), (40, 546653), (41, 533320), (67, 326360), (82, 266660), (134, 163180), (164, 133330), (199, 109880), (205, 106664), (268, 81590), (328, 66665), (335, 65272), (398, 54940), (410, 53332), (536, 40795), (670, 32636), (796, 27470), (820, 26666), (995, 21976), (1340, 16318), (1592, 13735), (1640, 13333), (1990, 10988), (2680, 8159), (2747, 7960), (3980, 5494)]