81542020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{2437}}^1$

素因数の和:2692

約数の個数: 48

約数和(自身を含む): 196600320

約数和(自身を除く): 115058300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 478, 956, 1195, 1673, 2390, 2437, 3346, 4780, 4874, 6692, 8365, 9748, 12185, 16730, 17059, 24370, 33460, 34118, 48740, 68236, 85295, 170590, 341180, 582443, 1164886, 2329772, 2912215, 4077101, 5824430, 8154202, 11648860, 16308404, 20385505, 40771010, 81542020]

約数ペア:

[(1, 81542020), (2, 40771010), (4, 20385505), (5, 16308404), (7, 11648860), (10, 8154202), (14, 5824430), (20, 4077101), (28, 2912215), (35, 2329772), (70, 1164886), (140, 582443), (239, 341180), (478, 170590), (956, 85295), (1195, 68236), (1673, 48740), (2390, 34118), (2437, 33460), (3346, 24370), (4780, 17059), (4874, 16730), (6692, 12185), (8365, 9748)]