20978664

素因数分解:

$2^3\times 3^1\times 7^2\times {\mathrm{17839}}^1$

素因数の和:17862

約数の個数: 48

約数和(自身を含む): 61012800

約数和(自身を除く): 40034136

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 49, 56, 84, 98, 147, 168, 196, 294, 392, 588, 1176, 17839, 35678, 53517, 71356, 107034, 124873, 142712, 214068, 249746, 374619, 428136, 499492, 749238, 874111, 998984, 1498476, 1748222, 2622333, 2996952, 3496444, 5244666, 6992888, 10489332, 20978664]

約数ペア:

[(1, 20978664), (2, 10489332), (3, 6992888), (4, 5244666), (6, 3496444), (7, 2996952), (8, 2622333), (12, 1748222), (14, 1498476), (21, 998984), (24, 874111), (28, 749238), (42, 499492), (49, 428136), (56, 374619), (84, 249746), (98, 214068), (147, 142712), (168, 124873), (196, 107034), (294, 71356), (392, 53517), (588, 35678), (1176, 17839)]