8919140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 19580400

約数和(自身を除く): 10661260

約数列:

[1, 2, 4, 5, 10, 20, 41, 73, 82, 146, 149, 164, 205, 292, 298, 365, 410, 596, 730, 745, 820, 1460, 1490, 2980, 2993, 5986, 6109, 10877, 11972, 12218, 14965, 21754, 24436, 29930, 30545, 43508, 54385, 59860, 61090, 108770, 122180, 217540, 445957, 891914, 1783828, 2229785, 4459570, 8919140]

約数ペア:

[(1, 8919140), (2, 4459570), (4, 2229785), (5, 1783828), (10, 891914), (20, 445957), (41, 217540), (73, 122180), (82, 108770), (146, 61090), (149, 59860), (164, 54385), (205, 43508), (292, 30545), (298, 29930), (365, 24436), (410, 21754), (596, 14965), (730, 12218), (745, 11972), (820, 10877), (1460, 6109), (1490, 5986), (2980, 2993)]