2561840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1033}}^1$

素因数の和:1077

約数の個数: 40

約数和(自身を含む): 6154368

約数和(自身を除く): 3592528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1033, 1240, 2066, 2480, 4132, 5165, 8264, 10330, 16528, 20660, 32023, 41320, 64046, 82640, 128092, 160115, 256184, 320230, 512368, 640460, 1280920, 2561840]

約数ペア:

[(1, 2561840), (2, 1280920), (4, 640460), (5, 512368), (8, 320230), (10, 256184), (16, 160115), (20, 128092), (31, 82640), (40, 64046), (62, 41320), (80, 32023), (124, 20660), (155, 16528), (248, 10330), (310, 8264), (496, 5165), (620, 4132), (1033, 2480), (1240, 2066)]