81231984

素因数分解:

$2^4\times 3^5\times {\mathrm{17}}^1\times {\mathrm{1229}}^1$

素因数の和:1269

約数の個数: 120

約数和(自身を含む): 249827760

約数和(自身を除く): 168595776

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 24, 27, 34, 36, 48, 51, 54, 68, 72, 81, 102, 108, 136, 144, 153, 162, 204, 216, 243, 272, 306, 324, 408, 432, 459, 486, 612, 648, 816, 918, 972, 1224, 1229, 1296, 1377, 1836, 1944, 2448, 2458, 2754, 3672, 3687, 3888, 4131, 4916, 5508, 7344, 7374, 8262, 9832, 11016, 11061, 14748, 16524, 19664, 20893, 22032, 22122, 29496, 33048, 33183, 41786, 44244, 58992, 62679, 66096, 66366, 83572, 88488, 99549, 125358, 132732, 167144, 176976, 188037, 199098, 250716, 265464, 298647, 334288, 376074, 398196, 501432, 530928, 564111, 597294, 752148, 796392, 1002864, 1128222, 1194588, 1504296, 1592784, 1692333, 2256444, 2389176, 3008592, 3384666, 4512888, 4778352, 5076999, 6769332, 9025776, 10153998, 13538664, 20307996, 27077328, 40615992, 81231984]

約数ペア:

[(1, 81231984), (2, 40615992), (3, 27077328), (4, 20307996), (6, 13538664), (8, 10153998), (9, 9025776), (12, 6769332), (16, 5076999), (17, 4778352), (18, 4512888), (24, 3384666), (27, 3008592), (34, 2389176), (36, 2256444), (48, 1692333), (51, 1592784), (54, 1504296), (68, 1194588), (72, 1128222), (81, 1002864), (102, 796392), (108, 752148), (136, 597294), (144, 564111), (153, 530928), (162, 501432), (204, 398196), (216, 376074), (243, 334288), (272, 298647), (306, 265464), (324, 250716), (408, 199098), (432, 188037), (459, 176976), (486, 167144), (612, 132732), (648, 125358), (816, 99549), (918, 88488), (972, 83572), (1224, 66366), (1229, 66096), (1296, 62679), (1377, 58992), (1836, 44244), (1944, 41786), (2448, 33183), (2458, 33048), (2754, 29496), (3672, 22122), (3687, 22032), (3888, 20893), (4131, 19664), (4916, 16524), (5508, 14748), (7344, 11061), (7374, 11016), (8262, 9832)]