840990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{97}}^1$

素因数の和:141

約数の個数: 48

約数和(自身を含む): 2166192

約数和(自身を除く): 1325202

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 51, 85, 97, 102, 170, 194, 255, 289, 291, 485, 510, 578, 582, 867, 970, 1445, 1455, 1649, 1734, 2890, 2910, 3298, 4335, 4947, 8245, 8670, 9894, 16490, 24735, 28033, 49470, 56066, 84099, 140165, 168198, 280330, 420495, 840990]

約数ペア:

[(1, 840990), (2, 420495), (3, 280330), (5, 168198), (6, 140165), (10, 84099), (15, 56066), (17, 49470), (30, 28033), (34, 24735), (51, 16490), (85, 9894), (97, 8670), (102, 8245), (170, 4947), (194, 4335), (255, 3298), (289, 2910), (291, 2890), (485, 1734), (510, 1649), (578, 1455), (582, 1445), (867, 970)]