18817980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{971}}^1$

素因数の和:1019

約数の個数: 96

約数和(自身を含む): 58786560

約数和(自身を除く): 39968580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 19, 20, 30, 34, 38, 51, 57, 60, 68, 76, 85, 95, 102, 114, 170, 190, 204, 228, 255, 285, 323, 340, 380, 510, 570, 646, 969, 971, 1020, 1140, 1292, 1615, 1938, 1942, 2913, 3230, 3876, 3884, 4845, 4855, 5826, 6460, 9690, 9710, 11652, 14565, 16507, 18449, 19380, 19420, 29130, 33014, 36898, 49521, 55347, 58260, 66028, 73796, 82535, 92245, 99042, 110694, 165070, 184490, 198084, 221388, 247605, 276735, 313633, 330140, 368980, 495210, 553470, 627266, 940899, 990420, 1106940, 1254532, 1568165, 1881798, 3136330, 3763596, 4704495, 6272660, 9408990, 18817980]

約数ペア:

[(1, 18817980), (2, 9408990), (3, 6272660), (4, 4704495), (5, 3763596), (6, 3136330), (10, 1881798), (12, 1568165), (15, 1254532), (17, 1106940), (19, 990420), (20, 940899), (30, 627266), (34, 553470), (38, 495210), (51, 368980), (57, 330140), (60, 313633), (68, 276735), (76, 247605), (85, 221388), (95, 198084), (102, 184490), (114, 165070), (170, 110694), (190, 99042), (204, 92245), (228, 82535), (255, 73796), (285, 66028), (323, 58260), (340, 55347), (380, 49521), (510, 36898), (570, 33014), (646, 29130), (969, 19420), (971, 19380), (1020, 18449), (1140, 16507), (1292, 14565), (1615, 11652), (1938, 9710), (1942, 9690), (2913, 6460), (3230, 5826), (3876, 4855), (3884, 4845)]