21942320

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1747}}^1$

素因数の和:1917

約数の個数: 40

約数和(自身を含む): 51370224

約数和(自身を除く): 29427904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 314, 628, 785, 1256, 1570, 1747, 2512, 3140, 3494, 6280, 6988, 8735, 12560, 13976, 17470, 27952, 34940, 69880, 139760, 274279, 548558, 1097116, 1371395, 2194232, 2742790, 4388464, 5485580, 10971160, 21942320]

約数ペア:

[(1, 21942320), (2, 10971160), (4, 5485580), (5, 4388464), (8, 2742790), (10, 2194232), (16, 1371395), (20, 1097116), (40, 548558), (80, 274279), (157, 139760), (314, 69880), (628, 34940), (785, 27952), (1256, 17470), (1570, 13976), (1747, 12560), (2512, 8735), (3140, 6988), (3494, 6280)]