21988000

素因数分解:

$2^5\times 5^3\times {\mathrm{23}}^1\times {\mathrm{239}}^1$

素因数の和:287

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 34621280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 32, 40, 46, 50, 80, 92, 100, 115, 125, 160, 184, 200, 230, 239, 250, 368, 400, 460, 478, 500, 575, 736, 800, 920, 956, 1000, 1150, 1195, 1840, 1912, 2000, 2300, 2390, 2875, 3680, 3824, 4000, 4600, 4780, 5497, 5750, 5975, 7648, 9200, 9560, 10994, 11500, 11950, 18400, 19120, 21988, 23000, 23900, 27485, 29875, 38240, 43976, 46000, 47800, 54970, 59750, 87952, 92000, 95600, 109940, 119500, 137425, 175904, 191200, 219880, 239000, 274850, 439760, 478000, 549700, 687125, 879520, 956000, 1099400, 1374250, 2198800, 2748500, 4397600, 5497000, 10994000, 21988000]

約数ペア:

[(1, 21988000), (2, 10994000), (4, 5497000), (5, 4397600), (8, 2748500), (10, 2198800), (16, 1374250), (20, 1099400), (23, 956000), (25, 879520), (32, 687125), (40, 549700), (46, 478000), (50, 439760), (80, 274850), (92, 239000), (100, 219880), (115, 191200), (125, 175904), (160, 137425), (184, 119500), (200, 109940), (230, 95600), (239, 92000), (250, 87952), (368, 59750), (400, 54970), (460, 47800), (478, 46000), (500, 43976), (575, 38240), (736, 29875), (800, 27485), (920, 23900), (956, 23000), (1000, 21988), (1150, 19120), (1195, 18400), (1840, 11950), (1912, 11500), (2000, 10994), (2300, 9560), (2390, 9200), (2875, 7648), (3680, 5975), (3824, 5750), (4000, 5497), (4600, 4780)]