20804868784

素因数分解:

$2^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1129}}^1\times {\mathrm{4013}}^1$

素因数の和:5198

約数の個数: 80

約数和(自身を含む): 47245101120

約数和(自身を除く): 26440232336

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 41, 56, 82, 112, 164, 287, 328, 574, 656, 1129, 1148, 2258, 2296, 4013, 4516, 4592, 7903, 8026, 9032, 15806, 16052, 18064, 28091, 31612, 32104, 46289, 56182, 63224, 64208, 92578, 112364, 126448, 164533, 185156, 224728, 324023, 329066, 370312, 449456, 648046, 658132, 740624, 1151731, 1296092, 1316264, 2303462, 2592184, 2632528, 4530677, 4606924, 5184368, 9061354, 9213848, 18122708, 18427696, 31714739, 36245416, 63429478, 72490832, 126858956, 185757757, 253717912, 371515514, 507435824, 743031028, 1300304299, 1486062056, 2600608598, 2972124112, 5201217196, 10402434392, 20804868784]

約数ペア:

[(1, 20804868784), (2, 10402434392), (4, 5201217196), (7, 2972124112), (8, 2600608598), (14, 1486062056), (16, 1300304299), (28, 743031028), (41, 507435824), (56, 371515514), (82, 253717912), (112, 185757757), (164, 126858956), (287, 72490832), (328, 63429478), (574, 36245416), (656, 31714739), (1129, 18427696), (1148, 18122708), (2258, 9213848), (2296, 9061354), (4013, 5184368), (4516, 4606924), (4592, 4530677), (7903, 2632528), (8026, 2592184), (9032, 2303462), (15806, 1316264), (16052, 1296092), (18064, 1151731), (28091, 740624), (31612, 658132), (32104, 648046), (46289, 449456), (56182, 370312), (63224, 329066), (64208, 324023), (92578, 224728), (112364, 185156), (126448, 164533)]