90072980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{1109}}^1$

素因数の和:1280

約数の個数: 48

約数和(自身を含む): 196922880

約数和(自身を除く): 106849900

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 131, 155, 262, 310, 524, 620, 655, 1109, 1310, 2218, 2620, 4061, 4436, 5545, 8122, 11090, 16244, 20305, 22180, 34379, 40610, 68758, 81220, 137516, 145279, 171895, 290558, 343790, 581116, 687580, 726395, 1452790, 2905580, 4503649, 9007298, 18014596, 22518245, 45036490, 90072980]

約数ペア:

[(1, 90072980), (2, 45036490), (4, 22518245), (5, 18014596), (10, 9007298), (20, 4503649), (31, 2905580), (62, 1452790), (124, 726395), (131, 687580), (155, 581116), (262, 343790), (310, 290558), (524, 171895), (620, 145279), (655, 137516), (1109, 81220), (1310, 68758), (2218, 40610), (2620, 34379), (4061, 22180), (4436, 20305), (5545, 16244), (8122, 11090)]