645820055

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{1789}}^1$

素因数の和:1979

約数の個数: 32

約数和(自身を含む): 853701120

約数和(自身を除く): 207881065

約数列:

[1, 5, 17, 31, 85, 137, 155, 527, 685, 1789, 2329, 2635, 4247, 8945, 11645, 21235, 30413, 55459, 72199, 152065, 245093, 277295, 360995, 942803, 1225465, 4166581, 4714015, 7597883, 20832905, 37989415, 129164011, 645820055]

約数ペア:

[(1, 645820055), (5, 129164011), (17, 37989415), (31, 20832905), (85, 7597883), (137, 4714015), (155, 4166581), (527, 1225465), (685, 942803), (1789, 360995), (2329, 277295), (2635, 245093), (4247, 152065), (8945, 72199), (11645, 55459), (21235, 30413)]