21783520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{12377}}^1$

素因数の和:12403

約数の個数: 48

約数和(自身を含む): 56146608

約数和(自身を除く): 34363088

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 12377, 24754, 49508, 61885, 99016, 123770, 136147, 198032, 247540, 272294, 396064, 495080, 544588, 680735, 990160, 1089176, 1361470, 1980320, 2178352, 2722940, 4356704, 5445880, 10891760, 21783520]

約数ペア:

[(1, 21783520), (2, 10891760), (4, 5445880), (5, 4356704), (8, 2722940), (10, 2178352), (11, 1980320), (16, 1361470), (20, 1089176), (22, 990160), (32, 680735), (40, 544588), (44, 495080), (55, 396064), (80, 272294), (88, 247540), (110, 198032), (160, 136147), (176, 123770), (220, 99016), (352, 61885), (440, 49508), (880, 24754), (1760, 12377)]