78899180

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1\times {\mathrm{281}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 169132320

約数和(自身を除く): 90233140

約数列:

[1, 2, 4, 5, 10, 20, 101, 139, 202, 278, 281, 404, 505, 556, 562, 695, 1010, 1124, 1390, 1405, 2020, 2780, 2810, 5620, 14039, 28078, 28381, 39059, 56156, 56762, 70195, 78118, 113524, 140390, 141905, 156236, 195295, 280780, 283810, 390590, 567620, 781180, 3944959, 7889918, 15779836, 19724795, 39449590, 78899180]

約数ペア:

[(1, 78899180), (2, 39449590), (4, 19724795), (5, 15779836), (10, 7889918), (20, 3944959), (101, 781180), (139, 567620), (202, 390590), (278, 283810), (281, 280780), (404, 195295), (505, 156236), (556, 141905), (562, 140390), (695, 113524), (1010, 78118), (1124, 70195), (1390, 56762), (1405, 56156), (2020, 39059), (2780, 28381), (2810, 28078), (5620, 14039)]