20880451540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1301}}^1\times {\mathrm{61729}}^1$

素因数の和:63052

約数の個数: 48

約数和(自身を含む): 47259006480

約数和(自身を除く): 26378554940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1301, 2602, 5204, 6505, 13010, 16913, 26020, 33826, 61729, 67652, 84565, 123458, 169130, 246916, 308645, 338260, 617290, 802477, 1234580, 1604954, 3209908, 4012385, 8024770, 16049540, 80309429, 160618858, 321237716, 401547145, 803094290, 1044022577, 1606188580, 2088045154, 4176090308, 5220112885, 10440225770, 20880451540]

約数ペア:

[(1, 20880451540), (2, 10440225770), (4, 5220112885), (5, 4176090308), (10, 2088045154), (13, 1606188580), (20, 1044022577), (26, 803094290), (52, 401547145), (65, 321237716), (130, 160618858), (260, 80309429), (1301, 16049540), (2602, 8024770), (5204, 4012385), (6505, 3209908), (13010, 1604954), (16913, 1234580), (26020, 802477), (33826, 617290), (61729, 338260), (67652, 308645), (84565, 246916), (123458, 169130)]