21565800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{11981}}^1$

素因数の和:12003

約数の個数: 72

約数和(自身を含む): 72431190

約数和(自身を除く): 50865390

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 60, 72, 75, 90, 100, 120, 150, 180, 200, 225, 300, 360, 450, 600, 900, 1800, 11981, 23962, 35943, 47924, 59905, 71886, 95848, 107829, 119810, 143772, 179715, 215658, 239620, 287544, 299525, 359430, 431316, 479240, 539145, 599050, 718860, 862632, 898575, 1078290, 1198100, 1437720, 1797150, 2156580, 2396200, 2695725, 3594300, 4313160, 5391450, 7188600, 10782900, 21565800]

約数ペア:

[(1, 21565800), (2, 10782900), (3, 7188600), (4, 5391450), (5, 4313160), (6, 3594300), (8, 2695725), (9, 2396200), (10, 2156580), (12, 1797150), (15, 1437720), (18, 1198100), (20, 1078290), (24, 898575), (25, 862632), (30, 718860), (36, 599050), (40, 539145), (45, 479240), (50, 431316), (60, 359430), (72, 299525), (75, 287544), (90, 239620), (100, 215658), (120, 179715), (150, 143772), (180, 119810), (200, 107829), (225, 95848), (300, 71886), (360, 59905), (450, 47924), (600, 35943), (900, 23962), (1800, 11981)]