17899780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{263}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 39118464

約数和(自身を除く): 21218684

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 83, 164, 166, 205, 263, 332, 410, 415, 526, 820, 830, 1052, 1315, 1660, 2630, 3403, 5260, 6806, 10783, 13612, 17015, 21566, 21829, 34030, 43132, 43658, 53915, 68060, 87316, 107830, 109145, 215660, 218290, 436580, 894989, 1789978, 3579956, 4474945, 8949890, 17899780]

約数ペア:

[(1, 17899780), (2, 8949890), (4, 4474945), (5, 3579956), (10, 1789978), (20, 894989), (41, 436580), (82, 218290), (83, 215660), (164, 109145), (166, 107830), (205, 87316), (263, 68060), (332, 53915), (410, 43658), (415, 43132), (526, 34030), (820, 21829), (830, 21566), (1052, 17015), (1315, 13612), (1660, 10783), (2630, 6806), (3403, 5260)]