64921980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63649}}^1$

素因数の和:63678

約数の個数: 48

約数和(自身を含む): 192477600

約数和(自身を除く): 127555620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 63649, 127298, 190947, 254596, 318245, 381894, 636490, 763788, 954735, 1082033, 1272980, 1909470, 2164066, 3246099, 3818940, 4328132, 5410165, 6492198, 10820330, 12984396, 16230495, 21640660, 32460990, 64921980]

約数ペア:

[(1, 64921980), (2, 32460990), (3, 21640660), (4, 16230495), (5, 12984396), (6, 10820330), (10, 6492198), (12, 5410165), (15, 4328132), (17, 3818940), (20, 3246099), (30, 2164066), (34, 1909470), (51, 1272980), (60, 1082033), (68, 954735), (85, 763788), (102, 636490), (170, 381894), (204, 318245), (255, 254596), (340, 190947), (510, 127298), (1020, 63649)]