281618688

素因数分解:

$2^8\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{421}}^1$

素因数の和:520

約数の個数: 144

約数和(自身を含む): 821164736

約数和(自身を除く): 539546048

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 64, 67, 78, 96, 104, 128, 134, 156, 192, 201, 208, 256, 268, 312, 384, 402, 416, 421, 536, 624, 768, 804, 832, 842, 871, 1072, 1248, 1263, 1608, 1664, 1684, 1742, 2144, 2496, 2526, 2613, 3216, 3328, 3368, 3484, 4288, 4992, 5052, 5226, 5473, 6432, 6736, 6968, 8576, 9984, 10104, 10452, 10946, 12864, 13472, 13936, 16419, 17152, 20208, 20904, 21892, 25728, 26944, 27872, 28207, 32838, 40416, 41808, 43784, 51456, 53888, 55744, 56414, 65676, 80832, 83616, 84621, 87568, 107776, 111488, 112828, 131352, 161664, 167232, 169242, 175136, 222976, 225656, 262704, 323328, 334464, 338484, 350272, 366691, 451312, 525408, 668928, 676968, 700544, 733382, 902624, 1050816, 1100073, 1353936, 1401088, 1466764, 1805248, 2101632, 2200146, 2707872, 2933528, 3610496, 4203264, 4400292, 5415744, 5867056, 7220992, 8800584, 10831488, 11734112, 17601168, 21662976, 23468224, 35202336, 46936448, 70404672, 93872896, 140809344, 281618688]

約数ペア:

[(1, 281618688), (2, 140809344), (3, 93872896), (4, 70404672), (6, 46936448), (8, 35202336), (12, 23468224), (13, 21662976), (16, 17601168), (24, 11734112), (26, 10831488), (32, 8800584), (39, 7220992), (48, 5867056), (52, 5415744), (64, 4400292), (67, 4203264), (78, 3610496), (96, 2933528), (104, 2707872), (128, 2200146), (134, 2101632), (156, 1805248), (192, 1466764), (201, 1401088), (208, 1353936), (256, 1100073), (268, 1050816), (312, 902624), (384, 733382), (402, 700544), (416, 676968), (421, 668928), (536, 525408), (624, 451312), (768, 366691), (804, 350272), (832, 338484), (842, 334464), (871, 323328), (1072, 262704), (1248, 225656), (1263, 222976), (1608, 175136), (1664, 169242), (1684, 167232), (1742, 161664), (2144, 131352), (2496, 112828), (2526, 111488), (2613, 107776), (3216, 87568), (3328, 84621), (3368, 83616), (3484, 80832), (4288, 65676), (4992, 56414), (5052, 55744), (5226, 53888), (5473, 51456), (6432, 43784), (6736, 41808), (6968, 40416), (8576, 32838), (9984, 28207), (10104, 27872), (10452, 26944), (10946, 25728), (12864, 21892), (13472, 20904), (13936, 20208), (16419, 17152)]