420486520

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{26479}}^1$

素因数の和:26887

約数の個数: 32

約数和(自身を含む): 948513600

約数和(自身を除く): 528027080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1985, 3176, 3970, 7940, 15880, 26479, 52958, 105916, 132395, 211832, 264790, 529580, 1059160, 10512163, 21024326, 42048652, 52560815, 84097304, 105121630, 210243260, 420486520]

約数ペア:

[(1, 420486520), (2, 210243260), (4, 105121630), (5, 84097304), (8, 52560815), (10, 42048652), (20, 21024326), (40, 10512163), (397, 1059160), (794, 529580), (1588, 264790), (1985, 211832), (3176, 132395), (3970, 105916), (7940, 52958), (15880, 26479)]