90743680

素因数分解:

$2^7\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1997}}^1$

素因数の和:2087

約数の個数: 64

約数和(自身を含む): 220099680

約数和(自身を除く): 129356000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 284, 320, 355, 568, 640, 710, 1136, 1420, 1997, 2272, 2840, 3994, 4544, 5680, 7988, 9088, 9985, 11360, 15976, 19970, 22720, 31952, 39940, 45440, 63904, 79880, 127808, 141787, 159760, 255616, 283574, 319520, 567148, 639040, 708935, 1134296, 1278080, 1417870, 2268592, 2835740, 4537184, 5671480, 9074368, 11342960, 18148736, 22685920, 45371840, 90743680]

約数ペア:

[(1, 90743680), (2, 45371840), (4, 22685920), (5, 18148736), (8, 11342960), (10, 9074368), (16, 5671480), (20, 4537184), (32, 2835740), (40, 2268592), (64, 1417870), (71, 1278080), (80, 1134296), (128, 708935), (142, 639040), (160, 567148), (284, 319520), (320, 283574), (355, 255616), (568, 159760), (640, 141787), (710, 127808), (1136, 79880), (1420, 63904), (1997, 45440), (2272, 39940), (2840, 31952), (3994, 22720), (4544, 19970), (5680, 15976), (7988, 11360), (9088, 9985)]