21174880

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1487}}^1$

素因数の和:1591

約数の個数: 48

約数和(自身を含む): 50621760

約数和(自身を除く): 29446880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 890, 1424, 1487, 1780, 2848, 2974, 3560, 5948, 7120, 7435, 11896, 14240, 14870, 23792, 29740, 47584, 59480, 118960, 132343, 237920, 264686, 529372, 661715, 1058744, 1323430, 2117488, 2646860, 4234976, 5293720, 10587440, 21174880]

約数ペア:

[(1, 21174880), (2, 10587440), (4, 5293720), (5, 4234976), (8, 2646860), (10, 2117488), (16, 1323430), (20, 1058744), (32, 661715), (40, 529372), (80, 264686), (89, 237920), (160, 132343), (178, 118960), (356, 59480), (445, 47584), (712, 29740), (890, 23792), (1424, 14870), (1487, 14240), (1780, 11896), (2848, 7435), (2974, 7120), (3560, 5948)]