18269720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{919}}^1$

素因数の和:1008

約数の個数: 64

約数和(自身を含む): 47692800

約数和(自身を除く): 29423080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 919, 994, 1420, 1838, 1988, 2485, 2840, 3676, 3976, 4595, 4970, 6433, 7352, 9190, 9940, 12866, 18380, 19880, 25732, 32165, 36760, 51464, 64330, 65249, 128660, 130498, 257320, 260996, 326245, 456743, 521992, 652490, 913486, 1304980, 1826972, 2283715, 2609960, 3653944, 4567430, 9134860, 18269720]

約数ペア:

[(1, 18269720), (2, 9134860), (4, 4567430), (5, 3653944), (7, 2609960), (8, 2283715), (10, 1826972), (14, 1304980), (20, 913486), (28, 652490), (35, 521992), (40, 456743), (56, 326245), (70, 260996), (71, 257320), (140, 130498), (142, 128660), (280, 65249), (284, 64330), (355, 51464), (497, 36760), (568, 32165), (710, 25732), (919, 19880), (994, 18380), (1420, 12866), (1838, 9940), (1988, 9190), (2485, 7352), (2840, 6433), (3676, 4970), (3976, 4595)]