18881568

素因数分解:

$2^5\times 3^2\times {\mathrm{53}}^1\times {\mathrm{1237}}^1$

素因数の和:1306

約数の個数: 72

約数和(自身を含む): 54751788

約数和(自身を除く): 35870220

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 53, 72, 96, 106, 144, 159, 212, 288, 318, 424, 477, 636, 848, 954, 1237, 1272, 1696, 1908, 2474, 2544, 3711, 3816, 4948, 5088, 7422, 7632, 9896, 11133, 14844, 15264, 19792, 22266, 29688, 39584, 44532, 59376, 65561, 89064, 118752, 131122, 178128, 196683, 262244, 356256, 393366, 524488, 590049, 786732, 1048976, 1180098, 1573464, 2097952, 2360196, 3146928, 4720392, 6293856, 9440784, 18881568]

約数ペア:

[(1, 18881568), (2, 9440784), (3, 6293856), (4, 4720392), (6, 3146928), (8, 2360196), (9, 2097952), (12, 1573464), (16, 1180098), (18, 1048976), (24, 786732), (32, 590049), (36, 524488), (48, 393366), (53, 356256), (72, 262244), (96, 196683), (106, 178128), (144, 131122), (159, 118752), (212, 89064), (288, 65561), (318, 59376), (424, 44532), (477, 39584), (636, 29688), (848, 22266), (954, 19792), (1237, 15264), (1272, 14844), (1696, 11133), (1908, 9896), (2474, 7632), (2544, 7422), (3711, 5088), (3816, 4948)]