21355920

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{9887}}^1$

素因数の和:9909

約数の個数: 80

約数和(自身を含む): 73566720

約数和(自身を除く): 52210800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160, 9887, 19774, 29661, 39548, 49435, 59322, 79096, 88983, 98870, 118644, 148305, 158192, 177966, 197740, 237288, 266949, 296610, 355932, 395480, 444915, 474576, 533898, 593220, 711864, 790960, 889830, 1067796, 1186440, 1334745, 1423728, 1779660, 2135592, 2372880, 2669490, 3559320, 4271184, 5338980, 7118640, 10677960, 21355920]

約数ペア:

[(1, 21355920), (2, 10677960), (3, 7118640), (4, 5338980), (5, 4271184), (6, 3559320), (8, 2669490), (9, 2372880), (10, 2135592), (12, 1779660), (15, 1423728), (16, 1334745), (18, 1186440), (20, 1067796), (24, 889830), (27, 790960), (30, 711864), (36, 593220), (40, 533898), (45, 474576), (48, 444915), (54, 395480), (60, 355932), (72, 296610), (80, 266949), (90, 237288), (108, 197740), (120, 177966), (135, 158192), (144, 148305), (180, 118644), (216, 98870), (240, 88983), (270, 79096), (360, 59322), (432, 49435), (540, 39548), (720, 29661), (1080, 19774), (2160, 9887)]