21887960

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{3163}}^1$

素因数の和:3347

約数の個数: 32

約数和(自身を含む): 49548240

約数和(自身を除く): 27660280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 3163, 3460, 6326, 6920, 12652, 15815, 25304, 31630, 63260, 126520, 547199, 1094398, 2188796, 2735995, 4377592, 5471990, 10943980, 21887960]

約数ペア:

[(1, 21887960), (2, 10943980), (4, 5471990), (5, 4377592), (8, 2735995), (10, 2188796), (20, 1094398), (40, 547199), (173, 126520), (346, 63260), (692, 31630), (865, 25304), (1384, 15815), (1730, 12652), (3163, 6920), (3460, 6326)]