21090720

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{6277}}^1$

素因数の和:6302

約数の個数: 96

約数和(自身を含む): 75938688

約数和(自身を除く): 54847968

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 210, 224, 240, 280, 336, 420, 480, 560, 672, 840, 1120, 1680, 3360, 6277, 12554, 18831, 25108, 31385, 37662, 43939, 50216, 62770, 75324, 87878, 94155, 100432, 125540, 131817, 150648, 175756, 188310, 200864, 219695, 251080, 263634, 301296, 351512, 376620, 439390, 502160, 527268, 602592, 659085, 703024, 753240, 878780, 1004320, 1054536, 1318170, 1406048, 1506480, 1757560, 2109072, 2636340, 3012960, 3515120, 4218144, 5272680, 7030240, 10545360, 21090720]

約数ペア:

[(1, 21090720), (2, 10545360), (3, 7030240), (4, 5272680), (5, 4218144), (6, 3515120), (7, 3012960), (8, 2636340), (10, 2109072), (12, 1757560), (14, 1506480), (15, 1406048), (16, 1318170), (20, 1054536), (21, 1004320), (24, 878780), (28, 753240), (30, 703024), (32, 659085), (35, 602592), (40, 527268), (42, 502160), (48, 439390), (56, 376620), (60, 351512), (70, 301296), (80, 263634), (84, 251080), (96, 219695), (105, 200864), (112, 188310), (120, 175756), (140, 150648), (160, 131817), (168, 125540), (210, 100432), (224, 94155), (240, 87878), (280, 75324), (336, 62770), (420, 50216), (480, 43939), (560, 37662), (672, 31385), (840, 25108), (1120, 18831), (1680, 12554), (3360, 6277)]