21116340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16759}}^1$

素因数の和:16781

約数の個数: 72

約数和(自身を含む): 73207680

約数和(自身を除く): 52091340

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16759, 33518, 50277, 67036, 83795, 100554, 117313, 150831, 167590, 201108, 234626, 251385, 301662, 335180, 351939, 469252, 502770, 586565, 603324, 703878, 754155, 1005540, 1055817, 1173130, 1407756, 1508310, 1759695, 2111634, 2346260, 3016620, 3519390, 4223268, 5279085, 7038780, 10558170, 21116340]

約数ペア:

[(1, 21116340), (2, 10558170), (3, 7038780), (4, 5279085), (5, 4223268), (6, 3519390), (7, 3016620), (9, 2346260), (10, 2111634), (12, 1759695), (14, 1508310), (15, 1407756), (18, 1173130), (20, 1055817), (21, 1005540), (28, 754155), (30, 703878), (35, 603324), (36, 586565), (42, 502770), (45, 469252), (60, 351939), (63, 335180), (70, 301662), (84, 251385), (90, 234626), (105, 201108), (126, 167590), (140, 150831), (180, 117313), (210, 100554), (252, 83795), (315, 67036), (420, 50277), (630, 33518), (1260, 16759)]