21455320

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{23321}}^1$

素因数の和:23355

約数の個数: 32

約数和(自身を含む): 50375520

約数和(自身を除く): 28920200

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 23321, 46642, 93284, 116605, 186568, 233210, 466420, 536383, 932840, 1072766, 2145532, 2681915, 4291064, 5363830, 10727660, 21455320]

約数ペア:

[(1, 21455320), (2, 10727660), (4, 5363830), (5, 4291064), (8, 2681915), (10, 2145532), (20, 1072766), (23, 932840), (40, 536383), (46, 466420), (92, 233210), (115, 186568), (184, 116605), (230, 93284), (460, 46642), (920, 23321)]