21404720

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11633}}^1$

素因数の和:11669

約数の個数: 40

約数和(自身を含む): 51934176

約数和(自身を除く): 30529456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11633, 23266, 46532, 58165, 93064, 116330, 186128, 232660, 267559, 465320, 535118, 930640, 1070236, 1337795, 2140472, 2675590, 4280944, 5351180, 10702360, 21404720]

約数ペア:

[(1, 21404720), (2, 10702360), (4, 5351180), (5, 4280944), (8, 2675590), (10, 2140472), (16, 1337795), (20, 1070236), (23, 930640), (40, 535118), (46, 465320), (80, 267559), (92, 232660), (115, 186128), (184, 116330), (230, 93064), (368, 58165), (460, 46532), (920, 23266), (1840, 11633)]