278889660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{569}}^1$

素因数の和:980

約数の個数: 144

約数和(自身を含む): 971006400

約数和(自身を除く): 692116740

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 389, 420, 569, 630, 778, 1138, 1167, 1260, 1556, 1707, 1945, 2276, 2334, 2723, 2845, 3414, 3501, 3890, 3983, 4668, 5121, 5446, 5690, 5835, 6828, 7002, 7780, 7966, 8169, 8535, 10242, 10892, 11380, 11670, 11949, 13615, 14004, 15932, 16338, 17070, 17505, 19915, 20484, 23340, 23898, 24507, 25605, 27230, 32676, 34140, 35010, 35847, 39830, 40845, 47796, 49014, 51210, 54460, 59745, 70020, 71694, 79660, 81690, 98028, 102420, 119490, 122535, 143388, 163380, 179235, 221341, 238980, 245070, 358470, 442682, 490140, 664023, 716940, 885364, 1106705, 1328046, 1549387, 1992069, 2213410, 2656092, 3098774, 3320115, 3984138, 4426820, 4648161, 6197548, 6640230, 7746935, 7968276, 9296322, 9960345, 13280460, 13944483, 15493870, 18592644, 19920690, 23240805, 27888966, 30987740, 39841380, 46481610, 55777932, 69722415, 92963220, 139444830, 278889660]

約数ペア:

[(1, 278889660), (2, 139444830), (3, 92963220), (4, 69722415), (5, 55777932), (6, 46481610), (7, 39841380), (9, 30987740), (10, 27888966), (12, 23240805), (14, 19920690), (15, 18592644), (18, 15493870), (20, 13944483), (21, 13280460), (28, 9960345), (30, 9296322), (35, 7968276), (36, 7746935), (42, 6640230), (45, 6197548), (60, 4648161), (63, 4426820), (70, 3984138), (84, 3320115), (90, 3098774), (105, 2656092), (126, 2213410), (140, 1992069), (180, 1549387), (210, 1328046), (252, 1106705), (315, 885364), (389, 716940), (420, 664023), (569, 490140), (630, 442682), (778, 358470), (1138, 245070), (1167, 238980), (1260, 221341), (1556, 179235), (1707, 163380), (1945, 143388), (2276, 122535), (2334, 119490), (2723, 102420), (2845, 98028), (3414, 81690), (3501, 79660), (3890, 71694), (3983, 70020), (4668, 59745), (5121, 54460), (5446, 51210), (5690, 49014), (5835, 47796), (6828, 40845), (7002, 39830), (7780, 35847), (7966, 35010), (8169, 34140), (8535, 32676), (10242, 27230), (10892, 25605), (11380, 24507), (11670, 23898), (11949, 23340), (13615, 20484), (14004, 19915), (15932, 17505), (16338, 17070)]