161209720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{2389}}^1$

素因数の和:2648

約数の個数: 64

約数和(自身を含む): 416433600

約数和(自身を除く): 255223880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 241, 280, 482, 964, 1205, 1687, 1928, 2389, 2410, 3374, 4778, 4820, 6748, 8435, 9556, 9640, 11945, 13496, 16723, 16870, 19112, 23890, 33446, 33740, 47780, 66892, 67480, 83615, 95560, 133784, 167230, 334460, 575749, 668920, 1151498, 2302996, 2878745, 4030243, 4605992, 5757490, 8060486, 11514980, 16120972, 20151215, 23029960, 32241944, 40302430, 80604860, 161209720]

約数ペア:

[(1, 161209720), (2, 80604860), (4, 40302430), (5, 32241944), (7, 23029960), (8, 20151215), (10, 16120972), (14, 11514980), (20, 8060486), (28, 5757490), (35, 4605992), (40, 4030243), (56, 2878745), (70, 2302996), (140, 1151498), (241, 668920), (280, 575749), (482, 334460), (964, 167230), (1205, 133784), (1687, 95560), (1928, 83615), (2389, 67480), (2410, 66892), (3374, 47780), (4778, 33740), (4820, 33446), (6748, 23890), (8435, 19112), (9556, 16870), (9640, 16723), (11945, 13496)]