21357292

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{433}}^1$

素因数の和:526

約数の個数: 48

約数和(自身を含む): 43747200

約数和(自身を除く): 22389908

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 59, 76, 118, 209, 236, 418, 433, 649, 836, 866, 1121, 1298, 1732, 2242, 2596, 4484, 4763, 8227, 9526, 12331, 16454, 19052, 24662, 25547, 32908, 49324, 51094, 90497, 102188, 180994, 281017, 361988, 485393, 562034, 970786, 1124068, 1941572, 5339323, 10678646, 21357292]

約数ペア:

[(1, 21357292), (2, 10678646), (4, 5339323), (11, 1941572), (19, 1124068), (22, 970786), (38, 562034), (44, 485393), (59, 361988), (76, 281017), (118, 180994), (209, 102188), (236, 90497), (418, 51094), (433, 49324), (649, 32908), (836, 25547), (866, 24662), (1121, 19052), (1298, 16454), (1732, 12331), (2242, 9526), (2596, 8227), (4484, 4763)]