256448120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{206813}}^1$

素因数の和:206855

約数の個数: 32

約数和(自身を含む): 595624320

約数和(自身を除く): 339176200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 206813, 413626, 827252, 1034065, 1654504, 2068130, 4136260, 6411203, 8272520, 12822406, 25644812, 32056015, 51289624, 64112030, 128224060, 256448120]

約数ペア:

[(1, 256448120), (2, 128224060), (4, 64112030), (5, 51289624), (8, 32056015), (10, 25644812), (20, 12822406), (31, 8272520), (40, 6411203), (62, 4136260), (124, 2068130), (155, 1654504), (248, 1034065), (310, 827252), (620, 413626), (1240, 206813)]