21000663488

素因数分解:

$2^6\times 7^1\times {\mathrm{907}}^1\times {\mathrm{51683}}^1$

素因数の和:52609

約数の個数: 56

約数和(自身を含む): 47679937152

約数和(自身を除く): 26679273664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 224, 448, 907, 1814, 3628, 6349, 7256, 12698, 14512, 25396, 29024, 50792, 51683, 58048, 101584, 103366, 203168, 206732, 361781, 406336, 413464, 723562, 826928, 1447124, 1653856, 2894248, 3307712, 5788496, 11576992, 23153984, 46876481, 93752962, 187505924, 328135367, 375011848, 656270734, 750023696, 1312541468, 1500047392, 2625082936, 3000094784, 5250165872, 10500331744, 21000663488]

約数ペア:

[(1, 21000663488), (2, 10500331744), (4, 5250165872), (7, 3000094784), (8, 2625082936), (14, 1500047392), (16, 1312541468), (28, 750023696), (32, 656270734), (56, 375011848), (64, 328135367), (112, 187505924), (224, 93752962), (448, 46876481), (907, 23153984), (1814, 11576992), (3628, 5788496), (6349, 3307712), (7256, 2894248), (12698, 1653856), (14512, 1447124), (25396, 826928), (29024, 723562), (50792, 413464), (51683, 406336), (58048, 361781), (101584, 206732), (103366, 203168)]