20490848

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5381}}^1$

素因数の和:5415

約数の個数: 48

約数和(自身を含む): 48825504

約数和(自身を除く): 28334656

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 68, 112, 119, 136, 224, 238, 272, 476, 544, 952, 1904, 3808, 5381, 10762, 21524, 37667, 43048, 75334, 86096, 91477, 150668, 172192, 182954, 301336, 365908, 602672, 640339, 731816, 1205344, 1280678, 1463632, 2561356, 2927264, 5122712, 10245424, 20490848]

約数ペア:

[(1, 20490848), (2, 10245424), (4, 5122712), (7, 2927264), (8, 2561356), (14, 1463632), (16, 1280678), (17, 1205344), (28, 731816), (32, 640339), (34, 602672), (56, 365908), (68, 301336), (112, 182954), (119, 172192), (136, 150668), (224, 91477), (238, 86096), (272, 75334), (476, 43048), (544, 37667), (952, 21524), (1904, 10762), (3808, 5381)]