20557240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2459}}^1$

素因数の和:2500

約数の個数: 64

約数和(自身を含む): 53136000

約数和(自身を除く): 32578760

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 2459, 4180, 4918, 8360, 9836, 12295, 19672, 24590, 27049, 46721, 49180, 54098, 93442, 98360, 108196, 135245, 186884, 216392, 233605, 270490, 373768, 467210, 513931, 540980, 934420, 1027862, 1081960, 1868840, 2055724, 2569655, 4111448, 5139310, 10278620, 20557240]

約数ペア:

[(1, 20557240), (2, 10278620), (4, 5139310), (5, 4111448), (8, 2569655), (10, 2055724), (11, 1868840), (19, 1081960), (20, 1027862), (22, 934420), (38, 540980), (40, 513931), (44, 467210), (55, 373768), (76, 270490), (88, 233605), (95, 216392), (110, 186884), (152, 135245), (190, 108196), (209, 98360), (220, 93442), (380, 54098), (418, 49180), (440, 46721), (760, 27049), (836, 24590), (1045, 19672), (1672, 12295), (2090, 9836), (2459, 8360), (4180, 4918)]