1909780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 4381776

約数和(自身を除く): 2471996

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 137, 164, 170, 205, 274, 340, 410, 548, 685, 697, 820, 1370, 1394, 2329, 2740, 2788, 3485, 4658, 5617, 6970, 9316, 11234, 11645, 13940, 22468, 23290, 28085, 46580, 56170, 95489, 112340, 190978, 381956, 477445, 954890, 1909780]

約数ペア:

[(1, 1909780), (2, 954890), (4, 477445), (5, 381956), (10, 190978), (17, 112340), (20, 95489), (34, 56170), (41, 46580), (68, 28085), (82, 23290), (85, 22468), (137, 13940), (164, 11645), (170, 11234), (205, 9316), (274, 6970), (340, 5617), (410, 4658), (548, 3485), (685, 2788), (697, 2740), (820, 2329), (1370, 1394)]