20291175

素因数分解:

$3^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{1307}}^1$

素因数の和:1349

約数の個数: 48

約数和(自身を含む): 38926080

約数和(自身を除く): 18634905

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 115, 135, 207, 225, 345, 575, 621, 675, 1035, 1307, 1725, 3105, 3921, 5175, 6535, 11763, 15525, 19605, 30061, 32675, 35289, 58815, 90183, 98025, 150305, 176445, 270549, 294075, 450915, 751525, 811647, 882225, 1352745, 2254575, 4058235, 6763725, 20291175]

約数ペア:

[(1, 20291175), (3, 6763725), (5, 4058235), (9, 2254575), (15, 1352745), (23, 882225), (25, 811647), (27, 751525), (45, 450915), (69, 294075), (75, 270549), (115, 176445), (135, 150305), (207, 98025), (225, 90183), (345, 58815), (575, 35289), (621, 32675), (675, 30061), (1035, 19605), (1307, 15525), (1725, 11763), (3105, 6535), (3921, 5175)]