20953840

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{7079}}^1$

素因数の和:7129

約数の個数: 40

約数和(自身を含む): 50041440

約数和(自身を除く): 29087600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 7079, 14158, 28316, 35395, 56632, 70790, 113264, 141580, 261923, 283160, 523846, 566320, 1047692, 1309615, 2095384, 2619230, 4190768, 5238460, 10476920, 20953840]

約数ペア:

[(1, 20953840), (2, 10476920), (4, 5238460), (5, 4190768), (8, 2619230), (10, 2095384), (16, 1309615), (20, 1047692), (37, 566320), (40, 523846), (74, 283160), (80, 261923), (148, 141580), (185, 113264), (296, 70790), (370, 56632), (592, 35395), (740, 28316), (1480, 14158), (2960, 7079)]