87388180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1\times {\mathrm{809}}^1$

素因数の和:1320

約数の個数: 48

約数和(自身を含む): 200854080

約数和(自身を除く): 113465900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 491, 809, 982, 1618, 1964, 2455, 3236, 4045, 4910, 5401, 8090, 8899, 9820, 10802, 16180, 17798, 21604, 27005, 35596, 44495, 54010, 88990, 108020, 177980, 397219, 794438, 1588876, 1986095, 3972190, 4369409, 7944380, 8738818, 17477636, 21847045, 43694090, 87388180]

約数ペア:

[(1, 87388180), (2, 43694090), (4, 21847045), (5, 17477636), (10, 8738818), (11, 7944380), (20, 4369409), (22, 3972190), (44, 1986095), (55, 1588876), (110, 794438), (220, 397219), (491, 177980), (809, 108020), (982, 88990), (1618, 54010), (1964, 44495), (2455, 35596), (3236, 27005), (4045, 21604), (4910, 17798), (5401, 16180), (8090, 10802), (8899, 9820)]