21255480

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19681}}^1$

素因数の和:19701

約数の個数: 64

約数和(自身を含む): 70855200

約数和(自身を除く): 49599720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 19681, 39362, 59043, 78724, 98405, 118086, 157448, 177129, 196810, 236172, 295215, 354258, 393620, 472344, 531387, 590430, 708516, 787240, 885645, 1062774, 1180860, 1417032, 1771290, 2125548, 2361720, 2656935, 3542580, 4251096, 5313870, 7085160, 10627740, 21255480]

約数ペア:

[(1, 21255480), (2, 10627740), (3, 7085160), (4, 5313870), (5, 4251096), (6, 3542580), (8, 2656935), (9, 2361720), (10, 2125548), (12, 1771290), (15, 1417032), (18, 1180860), (20, 1062774), (24, 885645), (27, 787240), (30, 708516), (36, 590430), (40, 531387), (45, 472344), (54, 393620), (60, 354258), (72, 295215), (90, 236172), (108, 196810), (120, 177129), (135, 157448), (180, 118086), (216, 98405), (270, 78724), (360, 59043), (540, 39362), (1080, 19681)]