18359980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{167}}^1\times {\mathrm{239}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 22282580

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 167, 230, 239, 334, 460, 478, 668, 835, 956, 1195, 1670, 2390, 3340, 3841, 4780, 5497, 7682, 10994, 15364, 19205, 21988, 27485, 38410, 39913, 54970, 76820, 79826, 109940, 159652, 199565, 399130, 798260, 917999, 1835998, 3671996, 4589995, 9179990, 18359980]

約数ペア:

[(1, 18359980), (2, 9179990), (4, 4589995), (5, 3671996), (10, 1835998), (20, 917999), (23, 798260), (46, 399130), (92, 199565), (115, 159652), (167, 109940), (230, 79826), (239, 76820), (334, 54970), (460, 39913), (478, 38410), (668, 27485), (835, 21988), (956, 19205), (1195, 15364), (1670, 10994), (2390, 7682), (3340, 5497), (3841, 4780)]