989841620

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1\times {\mathrm{2707}}^1$

素因数の和:3152

約数の個数: 48

約数和(自身を含む): 2129137920

約数和(自身を除く): 1139296300

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 389, 470, 778, 940, 1556, 1945, 2707, 3890, 5414, 7780, 10828, 13535, 18283, 27070, 36566, 54140, 73132, 91415, 127229, 182830, 254458, 365660, 508916, 636145, 1053023, 1272290, 2106046, 2544580, 4212092, 5265115, 10530230, 21060460, 49492081, 98984162, 197968324, 247460405, 494920810, 989841620]

約数ペア:

[(1, 989841620), (2, 494920810), (4, 247460405), (5, 197968324), (10, 98984162), (20, 49492081), (47, 21060460), (94, 10530230), (188, 5265115), (235, 4212092), (389, 2544580), (470, 2106046), (778, 1272290), (940, 1053023), (1556, 636145), (1945, 508916), (2707, 365660), (3890, 254458), (5414, 182830), (7780, 127229), (10828, 91415), (13535, 73132), (18283, 54140), (27070, 36566)]