20959224

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:261

約数の個数: 128

約数和(自身を含む): 63866880

約数和(自身を除く): 42907656

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 13, 22, 24, 26, 31, 33, 39, 44, 52, 62, 66, 78, 88, 93, 104, 124, 132, 143, 156, 186, 197, 248, 264, 286, 312, 341, 372, 394, 403, 429, 572, 591, 682, 744, 788, 806, 858, 1023, 1144, 1182, 1209, 1364, 1576, 1612, 1716, 2046, 2167, 2364, 2418, 2561, 2728, 3224, 3432, 4092, 4334, 4433, 4728, 4836, 5122, 6107, 6501, 7683, 8184, 8668, 8866, 9672, 10244, 12214, 13002, 13299, 15366, 17336, 17732, 18321, 20488, 24428, 26004, 26598, 28171, 30732, 35464, 36642, 48856, 52008, 53196, 56342, 61464, 67177, 73284, 79391, 84513, 106392, 112684, 134354, 146568, 158782, 169026, 201531, 225368, 238173, 268708, 317564, 338052, 403062, 476346, 537416, 635128, 676104, 806124, 873301, 952692, 1612248, 1746602, 1905384, 2619903, 3493204, 5239806, 6986408, 10479612, 20959224]

約数ペア:

[(1, 20959224), (2, 10479612), (3, 6986408), (4, 5239806), (6, 3493204), (8, 2619903), (11, 1905384), (12, 1746602), (13, 1612248), (22, 952692), (24, 873301), (26, 806124), (31, 676104), (33, 635128), (39, 537416), (44, 476346), (52, 403062), (62, 338052), (66, 317564), (78, 268708), (88, 238173), (93, 225368), (104, 201531), (124, 169026), (132, 158782), (143, 146568), (156, 134354), (186, 112684), (197, 106392), (248, 84513), (264, 79391), (286, 73284), (312, 67177), (341, 61464), (372, 56342), (394, 53196), (403, 52008), (429, 48856), (572, 36642), (591, 35464), (682, 30732), (744, 28171), (788, 26598), (806, 26004), (858, 24428), (1023, 20488), (1144, 18321), (1182, 17732), (1209, 17336), (1364, 15366), (1576, 13299), (1612, 13002), (1716, 12214), (2046, 10244), (2167, 9672), (2364, 8866), (2418, 8668), (2561, 8184), (2728, 7683), (3224, 6501), (3432, 6107), (4092, 5122), (4334, 4836), (4433, 4728)]