208026920

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{181}}^1\times {\mathrm{487}}^1$

素因数の和:738

約数の個数: 64

約数和(自身を含む): 479606400

約数和(自身を除く): 271579480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 181, 236, 295, 362, 472, 487, 590, 724, 905, 974, 1180, 1448, 1810, 1948, 2360, 2435, 3620, 3896, 4870, 7240, 9740, 10679, 19480, 21358, 28733, 42716, 53395, 57466, 85432, 88147, 106790, 114932, 143665, 176294, 213580, 229864, 287330, 352588, 427160, 440735, 574660, 705176, 881470, 1149320, 1762940, 3525880, 5200673, 10401346, 20802692, 26003365, 41605384, 52006730, 104013460, 208026920]

約数ペア:

[(1, 208026920), (2, 104013460), (4, 52006730), (5, 41605384), (8, 26003365), (10, 20802692), (20, 10401346), (40, 5200673), (59, 3525880), (118, 1762940), (181, 1149320), (236, 881470), (295, 705176), (362, 574660), (472, 440735), (487, 427160), (590, 352588), (724, 287330), (905, 229864), (974, 213580), (1180, 176294), (1448, 143665), (1810, 114932), (1948, 106790), (2360, 88147), (2435, 85432), (3620, 57466), (3896, 53395), (4870, 42716), (7240, 28733), (9740, 21358), (10679, 19480)]