31851320

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{389}}^1$

素因数の和:512

約数の個数: 64

約数和(自身を含む): 75816000

約数和(自身を除く): 43964680

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 89, 92, 115, 178, 184, 230, 356, 389, 445, 460, 712, 778, 890, 920, 1556, 1780, 1945, 2047, 3112, 3560, 3890, 4094, 7780, 8188, 8947, 10235, 15560, 16376, 17894, 20470, 34621, 35788, 40940, 44735, 69242, 71576, 81880, 89470, 138484, 173105, 178940, 276968, 346210, 357880, 692420, 796283, 1384840, 1592566, 3185132, 3981415, 6370264, 7962830, 15925660, 31851320]

約数ペア:

[(1, 31851320), (2, 15925660), (4, 7962830), (5, 6370264), (8, 3981415), (10, 3185132), (20, 1592566), (23, 1384840), (40, 796283), (46, 692420), (89, 357880), (92, 346210), (115, 276968), (178, 178940), (184, 173105), (230, 138484), (356, 89470), (389, 81880), (445, 71576), (460, 69242), (712, 44735), (778, 40940), (890, 35788), (920, 34621), (1556, 20470), (1780, 17894), (1945, 16376), (2047, 15560), (3112, 10235), (3560, 8947), (3890, 8188), (4094, 7780)]