21000687152

素因数分解:

$2^4\times {\mathrm{257}}^1\times {\mathrm{947}}^1\times {\mathrm{5393}}^1$

素因数の和:6605

約数の個数: 40

約数和(自身を含む): 40897868976

約数和(自身を除く): 19897181824

約数列:

[1, 2, 4, 8, 16, 257, 514, 947, 1028, 1894, 2056, 3788, 4112, 5393, 7576, 10786, 15152, 21572, 43144, 86288, 243379, 486758, 973516, 1386001, 1947032, 2772002, 3894064, 5107171, 5544004, 10214342, 11088008, 20428684, 22176016, 40857368, 81714736, 1312542947, 2625085894, 5250171788, 10500343576, 21000687152]

約数ペア:

[(1, 21000687152), (2, 10500343576), (4, 5250171788), (8, 2625085894), (16, 1312542947), (257, 81714736), (514, 40857368), (947, 22176016), (1028, 20428684), (1894, 11088008), (2056, 10214342), (3788, 5544004), (4112, 5107171), (5393, 3894064), (7576, 2772002), (10786, 1947032), (15152, 1386001), (21572, 973516), (43144, 486758), (86288, 243379)]