18919340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{3739}}^1$

素因数の和:3782

約数の個数: 48

約数和(自身を含む): 45239040

約数和(自身を除く): 26319700

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 220, 230, 253, 460, 506, 1012, 1265, 2530, 3739, 5060, 7478, 14956, 18695, 37390, 41129, 74780, 82258, 85997, 164516, 171994, 205645, 343988, 411290, 429985, 822580, 859970, 945967, 1719940, 1891934, 3783868, 4729835, 9459670, 18919340]

約数ペア:

[(1, 18919340), (2, 9459670), (4, 4729835), (5, 3783868), (10, 1891934), (11, 1719940), (20, 945967), (22, 859970), (23, 822580), (44, 429985), (46, 411290), (55, 343988), (92, 205645), (110, 171994), (115, 164516), (220, 85997), (230, 82258), (253, 74780), (460, 41129), (506, 37390), (1012, 18695), (1265, 14956), (2530, 7478), (3739, 5060)]