256806788

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{487}}^1\times {\mathrm{509}}^1$

素因数の和:1044

約数の個数: 48

約数和(自身を含む): 529616640

約数和(自身を除く): 272809852

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 487, 509, 518, 974, 1018, 1036, 1948, 2036, 3409, 3563, 6818, 7126, 13636, 14252, 18019, 18833, 36038, 37666, 72076, 75332, 126133, 131831, 247883, 252266, 263662, 495766, 504532, 527324, 991532, 1735181, 3470362, 6940724, 9171671, 18343342, 36686684, 64201697, 128403394, 256806788]

約数ペア:

[(1, 256806788), (2, 128403394), (4, 64201697), (7, 36686684), (14, 18343342), (28, 9171671), (37, 6940724), (74, 3470362), (148, 1735181), (259, 991532), (487, 527324), (509, 504532), (518, 495766), (974, 263662), (1018, 252266), (1036, 247883), (1948, 131831), (2036, 126133), (3409, 75332), (3563, 72076), (6818, 37666), (7126, 36038), (13636, 18833), (14252, 18019)]