21008338

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^2$

素因数の和:143

約数の個数: 48

約数和(自身を含む): 38162880

約数和(自身を除く): 17154542

約数列:

[1, 2, 13, 19, 23, 26, 38, 43, 46, 86, 247, 299, 437, 494, 559, 598, 817, 874, 989, 1118, 1634, 1849, 1978, 3698, 5681, 10621, 11362, 12857, 18791, 21242, 24037, 25714, 35131, 37582, 42527, 48074, 70262, 85054, 244283, 456703, 488566, 552851, 808013, 913406, 1105702, 1616026, 10504169, 21008338]

約数ペア:

[(1, 21008338), (2, 10504169), (13, 1616026), (19, 1105702), (23, 913406), (26, 808013), (38, 552851), (43, 488566), (46, 456703), (86, 244283), (247, 85054), (299, 70262), (437, 48074), (494, 42527), (559, 37582), (598, 35131), (817, 25714), (874, 24037), (989, 21242), (1118, 18791), (1634, 12857), (1849, 11362), (1978, 10621), (3698, 5681)]