20557696

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:219

約数の個数: 64

約数和(自身を含む): 44064000

約数和(自身を除く): 23506304

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 79, 107, 128, 152, 158, 214, 304, 316, 428, 608, 632, 856, 1216, 1264, 1501, 1712, 2033, 2432, 2528, 3002, 3424, 4066, 5056, 6004, 6848, 8132, 8453, 10112, 12008, 13696, 16264, 16906, 24016, 32528, 33812, 48032, 65056, 67624, 96064, 130112, 135248, 160607, 192128, 260224, 270496, 321214, 540992, 642428, 1081984, 1284856, 2569712, 5139424, 10278848, 20557696]

約数ペア:

[(1, 20557696), (2, 10278848), (4, 5139424), (8, 2569712), (16, 1284856), (19, 1081984), (32, 642428), (38, 540992), (64, 321214), (76, 270496), (79, 260224), (107, 192128), (128, 160607), (152, 135248), (158, 130112), (214, 96064), (304, 67624), (316, 65056), (428, 48032), (608, 33812), (632, 32528), (856, 24016), (1216, 16906), (1264, 16264), (1501, 13696), (1712, 12008), (2033, 10112), (2432, 8453), (2528, 8132), (3002, 6848), (3424, 6004), (4066, 5056)]