20635550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{599}}^1$

素因数の和:677

約数の個数: 48

約数和(自身を含む): 42184800

約数和(自身を除く): 21549250

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 53, 65, 106, 130, 265, 325, 530, 599, 650, 689, 1198, 1325, 1378, 2650, 2995, 3445, 5990, 6890, 7787, 14975, 15574, 17225, 29950, 31747, 34450, 38935, 63494, 77870, 158735, 194675, 317470, 389350, 412711, 793675, 825422, 1587350, 2063555, 4127110, 10317775, 20635550]

約数ペア:

[(1, 20635550), (2, 10317775), (5, 4127110), (10, 2063555), (13, 1587350), (25, 825422), (26, 793675), (50, 412711), (53, 389350), (65, 317470), (106, 194675), (130, 158735), (265, 77870), (325, 63494), (530, 38935), (599, 34450), (650, 31747), (689, 29950), (1198, 17225), (1325, 15574), (1378, 14975), (2650, 7787), (2995, 6890), (3445, 5990)]