21572568

素因数分解:

$2^3\times 3^9\times {\mathrm{137}}^1$

素因数の和:170

約数の個数: 80

約数和(自身を含む): 61114680

約数和(自身を除く): 39542112

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 137, 162, 216, 243, 274, 324, 411, 486, 548, 648, 729, 822, 972, 1096, 1233, 1458, 1644, 1944, 2187, 2466, 2916, 3288, 3699, 4374, 4932, 5832, 6561, 7398, 8748, 9864, 11097, 13122, 14796, 17496, 19683, 22194, 26244, 29592, 33291, 39366, 44388, 52488, 66582, 78732, 88776, 99873, 133164, 157464, 199746, 266328, 299619, 399492, 599238, 798984, 898857, 1198476, 1797714, 2396952, 2696571, 3595428, 5393142, 7190856, 10786284, 21572568]

約数ペア:

[(1, 21572568), (2, 10786284), (3, 7190856), (4, 5393142), (6, 3595428), (8, 2696571), (9, 2396952), (12, 1797714), (18, 1198476), (24, 898857), (27, 798984), (36, 599238), (54, 399492), (72, 299619), (81, 266328), (108, 199746), (137, 157464), (162, 133164), (216, 99873), (243, 88776), (274, 78732), (324, 66582), (411, 52488), (486, 44388), (548, 39366), (648, 33291), (729, 29592), (822, 26244), (972, 22194), (1096, 19683), (1233, 17496), (1458, 14796), (1644, 13122), (1944, 11097), (2187, 9864), (2466, 8748), (2916, 7398), (3288, 6561), (3699, 5832), (4374, 4932)]