990420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{971}}^1$

素因数の和:1000

約数の個数: 48

約数和(自身を含む): 2939328

約数和(自身を除く): 1948908

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, 971, 1020, 1942, 2913, 3884, 4855, 5826, 9710, 11652, 14565, 16507, 19420, 29130, 33014, 49521, 58260, 66028, 82535, 99042, 165070, 198084, 247605, 330140, 495210, 990420]

約数ペア:

[(1, 990420), (2, 495210), (3, 330140), (4, 247605), (5, 198084), (6, 165070), (10, 99042), (12, 82535), (15, 66028), (17, 58260), (20, 49521), (30, 33014), (34, 29130), (51, 19420), (60, 16507), (68, 14565), (85, 11652), (102, 9710), (170, 5826), (204, 4855), (255, 3884), (340, 2913), (510, 1942), (971, 1020)]