21123720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19559}}^1$

素因数の和:19579

約数の個数: 64

約数和(自身を含む): 70416000

約数和(自身を除く): 49292280

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, 19559, 39118, 58677, 78236, 97795, 117354, 156472, 176031, 195590, 234708, 293385, 352062, 391180, 469416, 528093, 586770, 704124, 782360, 880155, 1056186, 1173540, 1408248, 1760310, 2112372, 2347080, 2640465, 3520620, 4224744, 5280930, 7041240, 10561860, 21123720]

約数ペア:

[(1, 21123720), (2, 10561860), (3, 7041240), (4, 5280930), (5, 4224744), (6, 3520620), (8, 2640465), (9, 2347080), (10, 2112372), (12, 1760310), (15, 1408248), (18, 1173540), (20, 1056186), (24, 880155), (27, 782360), (30, 704124), (36, 586770), (40, 528093), (45, 469416), (54, 391180), (60, 352062), (72, 293385), (90, 234708), (108, 195590), (120, 176031), (135, 156472), (180, 117354), (216, 97795), (270, 78236), (360, 58677), (540, 39118), (1080, 19559)]