40765720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{173}}^1$

素因数の和:364

約数の個数: 64

約数和(自身を含む): 95087520

約数和(自身を除く): 54321800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 137, 172, 173, 215, 274, 344, 346, 430, 548, 685, 692, 860, 865, 1096, 1370, 1384, 1720, 1730, 2740, 3460, 5480, 5891, 6920, 7439, 11782, 14878, 23564, 23701, 29455, 29756, 37195, 47128, 47402, 58910, 59512, 74390, 94804, 117820, 118505, 148780, 189608, 235640, 237010, 297560, 474020, 948040, 1019143, 2038286, 4076572, 5095715, 8153144, 10191430, 20382860, 40765720]

約数ペア:

[(1, 40765720), (2, 20382860), (4, 10191430), (5, 8153144), (8, 5095715), (10, 4076572), (20, 2038286), (40, 1019143), (43, 948040), (86, 474020), (137, 297560), (172, 237010), (173, 235640), (215, 189608), (274, 148780), (344, 118505), (346, 117820), (430, 94804), (548, 74390), (685, 59512), (692, 58910), (860, 47402), (865, 47128), (1096, 37195), (1370, 29756), (1384, 29455), (1720, 23701), (1730, 23564), (2740, 14878), (3460, 11782), (5480, 7439), (5891, 6920)]