256960240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103613}}^1$

素因数の和:103657

約数の個数: 40

約数和(自身を含む): 616710528

約数和(自身を除く): 359750288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 103613, 207226, 414452, 518065, 828904, 1036130, 1657808, 2072260, 3212003, 4144520, 6424006, 8289040, 12848012, 16060015, 25696024, 32120030, 51392048, 64240060, 128480120, 256960240]

約数ペア:

[(1, 256960240), (2, 128480120), (4, 64240060), (5, 51392048), (8, 32120030), (10, 25696024), (16, 16060015), (20, 12848012), (31, 8289040), (40, 6424006), (62, 4144520), (80, 3212003), (124, 2072260), (155, 1657808), (248, 1036130), (310, 828904), (496, 518065), (620, 414452), (1240, 207226), (2480, 103613)]