21670108

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:434

約数の個数: 36

約数和(自身を含む): 41071800

約数和(自身を除く): 19401692

約数列:

[1, 2, 4, 19, 38, 43, 76, 86, 172, 349, 361, 698, 722, 817, 1396, 1444, 1634, 3268, 6631, 13262, 15007, 15523, 26524, 30014, 31046, 60028, 62092, 125989, 251978, 285133, 503956, 570266, 1140532, 5417527, 10835054, 21670108]

約数ペア:

[(1, 21670108), (2, 10835054), (4, 5417527), (19, 1140532), (38, 570266), (43, 503956), (76, 285133), (86, 251978), (172, 125989), (349, 62092), (361, 60028), (698, 31046), (722, 30014), (817, 26524), (1396, 15523), (1444, 15007), (1634, 13262), (3268, 6631)]