21565656

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{839}}^1$

素因数の和:878

約数の個数: 128

約数和(自身を含む): 72576000

約数和(自身を除く): 51010344

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 17, 18, 21, 24, 27, 28, 34, 36, 42, 51, 54, 56, 63, 68, 72, 84, 102, 108, 119, 126, 136, 153, 168, 189, 204, 216, 238, 252, 306, 357, 378, 408, 459, 476, 504, 612, 714, 756, 839, 918, 952, 1071, 1224, 1428, 1512, 1678, 1836, 2142, 2517, 2856, 3213, 3356, 3672, 4284, 5034, 5873, 6426, 6712, 7551, 8568, 10068, 11746, 12852, 14263, 15102, 17619, 20136, 22653, 23492, 25704, 28526, 30204, 35238, 42789, 45306, 46984, 52857, 57052, 60408, 70476, 85578, 90612, 99841, 105714, 114104, 128367, 140952, 158571, 171156, 181224, 199682, 211428, 256734, 299523, 317142, 342312, 385101, 399364, 422856, 513468, 599046, 634284, 770202, 798728, 898569, 1026936, 1198092, 1268568, 1540404, 1797138, 2396184, 2695707, 3080808, 3594276, 5391414, 7188552, 10782828, 21565656]

約数ペア:

[(1, 21565656), (2, 10782828), (3, 7188552), (4, 5391414), (6, 3594276), (7, 3080808), (8, 2695707), (9, 2396184), (12, 1797138), (14, 1540404), (17, 1268568), (18, 1198092), (21, 1026936), (24, 898569), (27, 798728), (28, 770202), (34, 634284), (36, 599046), (42, 513468), (51, 422856), (54, 399364), (56, 385101), (63, 342312), (68, 317142), (72, 299523), (84, 256734), (102, 211428), (108, 199682), (119, 181224), (126, 171156), (136, 158571), (153, 140952), (168, 128367), (189, 114104), (204, 105714), (216, 99841), (238, 90612), (252, 85578), (306, 70476), (357, 60408), (378, 57052), (408, 52857), (459, 46984), (476, 45306), (504, 42789), (612, 35238), (714, 30204), (756, 28526), (839, 25704), (918, 23492), (952, 22653), (1071, 20136), (1224, 17619), (1428, 15102), (1512, 14263), (1678, 12852), (1836, 11746), (2142, 10068), (2517, 8568), (2856, 7551), (3213, 6712), (3356, 6426), (3672, 5873), (4284, 5034)]