2019955780

素因数分解:

$2^2\times 5^1\times {\mathrm{6449}}^1\times {\mathrm{15661}}^1$

素因数の和:22119

約数の個数: 24

約数和(自身を含む): 4242835800

約数和(自身を除く): 2222880020

約数列:

[1, 2, 4, 5, 10, 20, 6449, 12898, 15661, 25796, 31322, 32245, 62644, 64490, 78305, 128980, 156610, 313220, 100997789, 201995578, 403991156, 504988945, 1009977890, 2019955780]

約数ペア:

[(1, 2019955780), (2, 1009977890), (4, 504988945), (5, 403991156), (10, 201995578), (20, 100997789), (6449, 313220), (12898, 156610), (15661, 128980), (25796, 78305), (31322, 64490), (32245, 62644)]