721640295

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{4441}}^1$

素因数の和:4632

約数の個数: 48

約数和(自身を含む): 1313836992

約数和(自身を除く): 592196697

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 157, 207, 345, 471, 785, 1035, 1413, 2355, 3611, 4441, 7065, 10833, 13323, 18055, 22205, 32499, 39969, 54165, 66615, 102143, 162495, 199845, 306429, 510715, 697237, 919287, 1532145, 2091711, 3486185, 4596435, 6275133, 10458555, 16036451, 31375665, 48109353, 80182255, 144328059, 240546765, 721640295]

約数ペア:

[(1, 721640295), (3, 240546765), (5, 144328059), (9, 80182255), (15, 48109353), (23, 31375665), (45, 16036451), (69, 10458555), (115, 6275133), (157, 4596435), (207, 3486185), (345, 2091711), (471, 1532145), (785, 919287), (1035, 697237), (1413, 510715), (2355, 306429), (3611, 199845), (4441, 162495), (7065, 102143), (10833, 66615), (13323, 54165), (18055, 39969), (22205, 32499)]