20817440

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18587}}^1$

素因数の和:18609

約数の個数: 48

約数和(自身を含む): 56210112

約数和(自身を除く): 35392672

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18587, 37174, 74348, 92935, 130109, 148696, 185870, 260218, 297392, 371740, 520436, 594784, 650545, 743480, 1040872, 1301090, 1486960, 2081744, 2602180, 2973920, 4163488, 5204360, 10408720, 20817440]

約数ペア:

[(1, 20817440), (2, 10408720), (4, 5204360), (5, 4163488), (7, 2973920), (8, 2602180), (10, 2081744), (14, 1486960), (16, 1301090), (20, 1040872), (28, 743480), (32, 650545), (35, 594784), (40, 520436), (56, 371740), (70, 297392), (80, 260218), (112, 185870), (140, 148696), (160, 130109), (224, 92935), (280, 74348), (560, 37174), (1120, 18587)]