890281060

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1\times {\mathrm{1009}}^1$

素因数の和:1456

約数の個数: 48

約数和(自身を含む): 1890065520

約数和(自身を除く): 999784460

約数列:

[1, 2, 4, 5, 10, 20, 157, 281, 314, 562, 628, 785, 1009, 1124, 1405, 1570, 2018, 2810, 3140, 4036, 5045, 5620, 10090, 20180, 44117, 88234, 158413, 176468, 220585, 283529, 316826, 441170, 567058, 633652, 792065, 882340, 1134116, 1417645, 1584130, 2835290, 3168260, 5670580, 44514053, 89028106, 178056212, 222570265, 445140530, 890281060]

約数ペア:

[(1, 890281060), (2, 445140530), (4, 222570265), (5, 178056212), (10, 89028106), (20, 44514053), (157, 5670580), (281, 3168260), (314, 2835290), (562, 1584130), (628, 1417645), (785, 1134116), (1009, 882340), (1124, 792065), (1405, 633652), (1570, 567058), (2018, 441170), (2810, 316826), (3140, 283529), (4036, 220585), (5045, 176468), (5620, 158413), (10090, 88234), (20180, 44117)]