20662196

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{349}}^1$

素因数の和:432

約数の個数: 36

約数和(自身を含む): 39204900

約数和(自身を除く): 18542704

約数列:

[1, 2, 4, 19, 38, 41, 76, 82, 164, 349, 361, 698, 722, 779, 1396, 1444, 1558, 3116, 6631, 13262, 14309, 14801, 26524, 28618, 29602, 57236, 59204, 125989, 251978, 271871, 503956, 543742, 1087484, 5165549, 10331098, 20662196]

約数ペア:

[(1, 20662196), (2, 10331098), (4, 5165549), (19, 1087484), (38, 543742), (41, 503956), (76, 271871), (82, 251978), (164, 125989), (349, 59204), (361, 57236), (698, 29602), (722, 28618), (779, 26524), (1396, 14801), (1444, 14309), (1558, 13262), (3116, 6631)]