81457390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{4201}}^1$

素因数の和:4492

約数の個数: 32

約数和(自身を含む): 168214464

約数和(自身を除く): 86757074

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 277, 554, 1385, 1939, 2770, 3878, 4201, 8402, 9695, 19390, 21005, 29407, 42010, 58814, 147035, 294070, 1163677, 2327354, 5818385, 8145739, 11636770, 16291478, 40728695, 81457390]

約数ペア:

[(1, 81457390), (2, 40728695), (5, 16291478), (7, 11636770), (10, 8145739), (14, 5818385), (35, 2327354), (70, 1163677), (277, 294070), (554, 147035), (1385, 58814), (1939, 42010), (2770, 29407), (3878, 21005), (4201, 19390), (8402, 9695)]