20595820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1123}}^1$

素因数の和:1270

約数の個数: 48

約数和(自身を含む): 49851648

約数和(自身を除く): 29255828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1123, 1310, 1834, 2246, 2620, 3668, 4492, 4585, 5615, 7861, 9170, 11230, 15722, 18340, 22460, 31444, 39305, 78610, 147113, 157220, 294226, 588452, 735565, 1029791, 1471130, 2059582, 2942260, 4119164, 5148955, 10297910, 20595820]

約数ペア:

[(1, 20595820), (2, 10297910), (4, 5148955), (5, 4119164), (7, 2942260), (10, 2059582), (14, 1471130), (20, 1029791), (28, 735565), (35, 588452), (70, 294226), (131, 157220), (140, 147113), (262, 78610), (524, 39305), (655, 31444), (917, 22460), (1123, 18340), (1310, 15722), (1834, 11230), (2246, 9170), (2620, 7861), (3668, 5615), (4492, 4585)]