1261323440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1212811}}^1$

素因数の和:1212837

約数の個数: 40

約数和(自身を含む): 3158162448

約数和(自身を除く): 1896839008

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1212811, 2425622, 4851244, 6064055, 9702488, 12128110, 15766543, 19404976, 24256220, 31533086, 48512440, 63066172, 78832715, 97024880, 126132344, 157665430, 252264688, 315330860, 630661720, 1261323440]

約数ペア:

[(1, 1261323440), (2, 630661720), (4, 315330860), (5, 252264688), (8, 157665430), (10, 126132344), (13, 97024880), (16, 78832715), (20, 63066172), (26, 48512440), (40, 31533086), (52, 24256220), (65, 19404976), (80, 15766543), (104, 12128110), (130, 9702488), (208, 6064055), (260, 4851244), (520, 2425622), (1040, 1212811)]