81489908

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{157}}^1\times {\mathrm{449}}^1$

素因数の和:644

約数の個数: 36

約数和(自身を含む): 152793900

約数和(自身を除く): 71303992

約数列:

[1, 2, 4, 17, 34, 68, 157, 289, 314, 449, 578, 628, 898, 1156, 1796, 2669, 5338, 7633, 10676, 15266, 30532, 45373, 70493, 90746, 129761, 140986, 181492, 259522, 281972, 519044, 1198381, 2396762, 4793524, 20372477, 40744954, 81489908]

約数ペア:

[(1, 81489908), (2, 40744954), (4, 20372477), (17, 4793524), (34, 2396762), (68, 1198381), (157, 519044), (289, 281972), (314, 259522), (449, 181492), (578, 140986), (628, 129761), (898, 90746), (1156, 70493), (1796, 45373), (2669, 30532), (5338, 15266), (7633, 10676)]