647213784

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{823}}^1$

素因数の和:1021

約数の個数: 128

約数和(自身を含む): 1923809280

約数和(自身を除く): 1276595496

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 31, 42, 56, 62, 84, 93, 124, 151, 168, 186, 217, 248, 302, 372, 434, 453, 604, 651, 744, 823, 868, 906, 1057, 1208, 1302, 1646, 1736, 1812, 2114, 2469, 2604, 3171, 3292, 3624, 4228, 4681, 4938, 5208, 5761, 6342, 6584, 8456, 9362, 9876, 11522, 12684, 14043, 17283, 18724, 19752, 23044, 25368, 25513, 28086, 32767, 34566, 37448, 46088, 51026, 56172, 65534, 69132, 76539, 98301, 102052, 112344, 124273, 131068, 138264, 153078, 178591, 196602, 204104, 248546, 262136, 306156, 357182, 372819, 393204, 497092, 535773, 612312, 714364, 745638, 786408, 869911, 994184, 1071546, 1428728, 1491276, 1739822, 2143092, 2609733, 2982552, 3479644, 3852463, 4286184, 5219466, 6959288, 7704926, 10438932, 11557389, 15409852, 20877864, 23114778, 26967241, 30819704, 46229556, 53934482, 80901723, 92459112, 107868964, 161803446, 215737928, 323606892, 647213784]

約数ペア:

[(1, 647213784), (2, 323606892), (3, 215737928), (4, 161803446), (6, 107868964), (7, 92459112), (8, 80901723), (12, 53934482), (14, 46229556), (21, 30819704), (24, 26967241), (28, 23114778), (31, 20877864), (42, 15409852), (56, 11557389), (62, 10438932), (84, 7704926), (93, 6959288), (124, 5219466), (151, 4286184), (168, 3852463), (186, 3479644), (217, 2982552), (248, 2609733), (302, 2143092), (372, 1739822), (434, 1491276), (453, 1428728), (604, 1071546), (651, 994184), (744, 869911), (823, 786408), (868, 745638), (906, 714364), (1057, 612312), (1208, 535773), (1302, 497092), (1646, 393204), (1736, 372819), (1812, 357182), (2114, 306156), (2469, 262136), (2604, 248546), (3171, 204104), (3292, 196602), (3624, 178591), (4228, 153078), (4681, 138264), (4938, 131068), (5208, 124273), (5761, 112344), (6342, 102052), (6584, 98301), (8456, 76539), (9362, 69132), (9876, 65534), (11522, 56172), (12684, 51026), (14043, 46088), (17283, 37448), (18724, 34566), (19752, 32767), (23044, 28086), (25368, 25513)]