21390124

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1297}}^1$

素因数の和:1358

約数の個数: 48

約数和(自身を含む): 46520320

約数和(自身を除く): 25130196

約数列:

[1, 2, 4, 7, 14, 19, 28, 31, 38, 62, 76, 124, 133, 217, 266, 434, 532, 589, 868, 1178, 1297, 2356, 2594, 4123, 5188, 8246, 9079, 16492, 18158, 24643, 36316, 40207, 49286, 80414, 98572, 160828, 172501, 281449, 345002, 562898, 690004, 763933, 1125796, 1527866, 3055732, 5347531, 10695062, 21390124]

約数ペア:

[(1, 21390124), (2, 10695062), (4, 5347531), (7, 3055732), (14, 1527866), (19, 1125796), (28, 763933), (31, 690004), (38, 562898), (62, 345002), (76, 281449), (124, 172501), (133, 160828), (217, 98572), (266, 80414), (434, 49286), (532, 40207), (589, 36316), (868, 24643), (1178, 18158), (1297, 16492), (2356, 9079), (2594, 8246), (4123, 5188)]