256121490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{389}}^1\times {\mathrm{1291}}^1$

素因数の和:1707

約数の個数: 64

約数和(自身を含む): 653028480

約数和(自身を除く): 396906990

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 51, 85, 102, 170, 255, 389, 510, 778, 1167, 1291, 1945, 2334, 2582, 3873, 3890, 5835, 6455, 6613, 7746, 11670, 12910, 13226, 19365, 19839, 21947, 33065, 38730, 39678, 43894, 65841, 66130, 99195, 109735, 131682, 198390, 219470, 329205, 502199, 658410, 1004398, 1506597, 2510995, 3013194, 5021990, 7532985, 8537383, 15065970, 17074766, 25612149, 42686915, 51224298, 85373830, 128060745, 256121490]

約数ペア:

[(1, 256121490), (2, 128060745), (3, 85373830), (5, 51224298), (6, 42686915), (10, 25612149), (15, 17074766), (17, 15065970), (30, 8537383), (34, 7532985), (51, 5021990), (85, 3013194), (102, 2510995), (170, 1506597), (255, 1004398), (389, 658410), (510, 502199), (778, 329205), (1167, 219470), (1291, 198390), (1945, 131682), (2334, 109735), (2582, 99195), (3873, 66130), (3890, 65841), (5835, 43894), (6455, 39678), (6613, 38730), (7746, 33065), (11670, 21947), (12910, 19839), (13226, 19365)]