636479660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{991}}^1\times {\mathrm{1889}}^1$

素因数の和:2906

約数の個数: 48

約数和(自身を含む): 1417409280

約数和(自身を除く): 780929620

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 991, 1889, 1982, 3778, 3964, 4955, 7556, 9445, 9910, 16847, 18890, 19820, 32113, 33694, 37780, 64226, 67388, 84235, 128452, 160565, 168470, 321130, 336940, 642260, 1871999, 3743998, 7487996, 9359995, 18719990, 31823983, 37439980, 63647966, 127295932, 159119915, 318239830, 636479660]

約数ペア:

[(1, 636479660), (2, 318239830), (4, 159119915), (5, 127295932), (10, 63647966), (17, 37439980), (20, 31823983), (34, 18719990), (68, 9359995), (85, 7487996), (170, 3743998), (340, 1871999), (991, 642260), (1889, 336940), (1982, 321130), (3778, 168470), (3964, 160565), (4955, 128452), (7556, 84235), (9445, 67388), (9910, 64226), (16847, 37780), (18890, 33694), (19820, 32113)]