209970180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{166643}}^1$

素因数の和:166665

約数の個数: 72

約数和(自身を含む): 727900992

約数和(自身を除く): 517930812

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, 166643, 333286, 499929, 666572, 833215, 999858, 1166501, 1499787, 1666430, 1999716, 2333002, 2499645, 2999574, 3332860, 3499503, 4666004, 4999290, 5832505, 5999148, 6999006, 7498935, 9998580, 10498509, 11665010, 13998012, 14997870, 17497515, 20997018, 23330020, 29995740, 34995030, 41994036, 52492545, 69990060, 104985090, 209970180]

約数ペア:

[(1, 209970180), (2, 104985090), (3, 69990060), (4, 52492545), (5, 41994036), (6, 34995030), (7, 29995740), (9, 23330020), (10, 20997018), (12, 17497515), (14, 14997870), (15, 13998012), (18, 11665010), (20, 10498509), (21, 9998580), (28, 7498935), (30, 6999006), (35, 5999148), (36, 5832505), (42, 4999290), (45, 4666004), (60, 3499503), (63, 3332860), (70, 2999574), (84, 2499645), (90, 2333002), (105, 1999716), (126, 1666430), (140, 1499787), (180, 1166501), (210, 999858), (252, 833215), (315, 666572), (420, 499929), (630, 333286), (1260, 166643)]