21684814

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{577}}^1$

素因数の和:664

約数の個数: 32

約数和(自身を含む): 36622080

約数和(自身を除く): 14937266

約数列:

[1, 2, 19, 23, 38, 43, 46, 86, 437, 577, 817, 874, 989, 1154, 1634, 1978, 10963, 13271, 18791, 21926, 24811, 26542, 37582, 49622, 252149, 471409, 504298, 570653, 942818, 1141306, 10842407, 21684814]

約数ペア:

[(1, 21684814), (2, 10842407), (19, 1141306), (23, 942818), (38, 570653), (43, 504298), (46, 471409), (86, 252149), (437, 49622), (577, 37582), (817, 26542), (874, 24811), (989, 21926), (1154, 18791), (1634, 13271), (1978, 10963)]