21709080

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{20101}}^1$

素因数の和:20121

約数の個数: 64

約数和(自身を含む): 72367200

約数和(自身を除く): 50658120

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, 20101, 40202, 60303, 80404, 100505, 120606, 160808, 180909, 201010, 241212, 301515, 361818, 402020, 482424, 542727, 603030, 723636, 804040, 904545, 1085454, 1206060, 1447272, 1809090, 2170908, 2412120, 2713635, 3618180, 4341816, 5427270, 7236360, 10854540, 21709080]

約数ペア:

[(1, 21709080), (2, 10854540), (3, 7236360), (4, 5427270), (5, 4341816), (6, 3618180), (8, 2713635), (9, 2412120), (10, 2170908), (12, 1809090), (15, 1447272), (18, 1206060), (20, 1085454), (24, 904545), (27, 804040), (30, 723636), (36, 603030), (40, 542727), (45, 482424), (54, 402020), (60, 361818), (72, 301515), (90, 241212), (108, 201010), (120, 180909), (135, 160808), (180, 120606), (216, 100505), (270, 80404), (360, 60303), (540, 40202), (1080, 20101)]