20004790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4159}}^1$

素因数の和:4216

約数の個数: 32

約数和(自身を含む): 39836160

約数和(自身を除く): 19831370

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 185, 370, 481, 962, 2405, 4159, 4810, 8318, 20795, 41590, 54067, 108134, 153883, 270335, 307766, 540670, 769415, 1538830, 2000479, 4000958, 10002395, 20004790]

約数ペア:

[(1, 20004790), (2, 10002395), (5, 4000958), (10, 2000479), (13, 1538830), (26, 769415), (37, 540670), (65, 307766), (74, 270335), (130, 153883), (185, 108134), (370, 54067), (481, 41590), (962, 20795), (2405, 8318), (4159, 4810)]