20920360

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{12163}}^1$

素因数の和:12217

約数の個数: 32

約数和(自身を含む): 48169440

約数和(自身を除く): 27249080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 12163, 24326, 48652, 60815, 97304, 121630, 243260, 486520, 523009, 1046018, 2092036, 2615045, 4184072, 5230090, 10460180, 20920360]

約数ペア:

[(1, 20920360), (2, 10460180), (4, 5230090), (5, 4184072), (8, 2615045), (10, 2092036), (20, 1046018), (40, 523009), (43, 486520), (86, 243260), (172, 121630), (215, 97304), (344, 60815), (430, 48652), (860, 24326), (1720, 12163)]