261325870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{118247}}^1$

素因数の和:118284

約数の個数: 32

約数和(自身を含む): 536372928

約数和(自身を除く): 275047058

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 118247, 236494, 591235, 1182470, 1537211, 2010199, 3074422, 4020398, 7686055, 10050995, 15372110, 20101990, 26132587, 52265174, 130662935, 261325870]

約数ペア:

[(1, 261325870), (2, 130662935), (5, 52265174), (10, 26132587), (13, 20101990), (17, 15372110), (26, 10050995), (34, 7686055), (65, 4020398), (85, 3074422), (130, 2010199), (170, 1537211), (221, 1182470), (442, 591235), (1105, 236494), (2210, 118247)]