68781560

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{55469}}^1$

素因数の和:55511

約数の個数: 32

約数和(自身を含む): 159753600

約数和(自身を除く): 90972040

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 55469, 110938, 221876, 277345, 443752, 554690, 1109380, 1719539, 2218760, 3439078, 6878156, 8597695, 13756312, 17195390, 34390780, 68781560]

約数ペア:

[(1, 68781560), (2, 34390780), (4, 17195390), (5, 13756312), (8, 8597695), (10, 6878156), (20, 3439078), (31, 2218760), (40, 1719539), (62, 1109380), (124, 554690), (155, 443752), (248, 277345), (310, 221876), (620, 110938), (1240, 55469)]