278647908

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{643}}^1$

素因数の和:742

約数の個数: 144

約数和(自身を含む): 838704384

約数和(自身を除く): 560056476

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 42, 44, 49, 66, 67, 77, 84, 98, 132, 134, 147, 154, 196, 201, 231, 268, 294, 308, 402, 462, 469, 539, 588, 643, 737, 804, 924, 938, 1078, 1286, 1407, 1474, 1617, 1876, 1929, 2156, 2211, 2572, 2814, 2948, 3234, 3283, 3858, 4422, 4501, 5159, 5628, 6468, 6566, 7073, 7716, 8844, 9002, 9849, 10318, 13132, 13503, 14146, 15477, 18004, 19698, 20636, 21219, 27006, 28292, 30954, 31507, 36113, 39396, 42438, 43081, 49511, 54012, 61908, 63014, 72226, 84876, 86162, 94521, 99022, 108339, 126028, 129243, 144452, 148533, 172324, 189042, 198044, 216678, 258486, 297066, 301567, 346577, 378084, 433356, 473891, 516972, 594132, 603134, 693154, 904701, 947782, 1039731, 1206268, 1386308, 1421673, 1809402, 1895564, 2079462, 2110969, 2843346, 3317237, 3618804, 4158924, 4221938, 5686692, 6332907, 6634474, 8443876, 9951711, 12665814, 13268948, 19903422, 23220659, 25331628, 39806844, 46441318, 69661977, 92882636, 139323954, 278647908]

約数ペア:

[(1, 278647908), (2, 139323954), (3, 92882636), (4, 69661977), (6, 46441318), (7, 39806844), (11, 25331628), (12, 23220659), (14, 19903422), (21, 13268948), (22, 12665814), (28, 9951711), (33, 8443876), (42, 6634474), (44, 6332907), (49, 5686692), (66, 4221938), (67, 4158924), (77, 3618804), (84, 3317237), (98, 2843346), (132, 2110969), (134, 2079462), (147, 1895564), (154, 1809402), (196, 1421673), (201, 1386308), (231, 1206268), (268, 1039731), (294, 947782), (308, 904701), (402, 693154), (462, 603134), (469, 594132), (539, 516972), (588, 473891), (643, 433356), (737, 378084), (804, 346577), (924, 301567), (938, 297066), (1078, 258486), (1286, 216678), (1407, 198044), (1474, 189042), (1617, 172324), (1876, 148533), (1929, 144452), (2156, 129243), (2211, 126028), (2572, 108339), (2814, 99022), (2948, 94521), (3234, 86162), (3283, 84876), (3858, 72226), (4422, 63014), (4501, 61908), (5159, 54012), (5628, 49511), (6468, 43081), (6566, 42438), (7073, 39396), (7716, 36113), (8844, 31507), (9002, 30954), (9849, 28292), (10318, 27006), (13132, 21219), (13503, 20636), (14146, 19698), (15477, 18004)]