21781080

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3559}}^1$

素因数の和:3593

約数の個数: 96

約数和(自身を含む): 74973600

約数和(自身を除く): 53192520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 30, 34, 36, 40, 45, 51, 60, 68, 72, 85, 90, 102, 120, 136, 153, 170, 180, 204, 255, 306, 340, 360, 408, 510, 612, 680, 765, 1020, 1224, 1530, 2040, 3060, 3559, 6120, 7118, 10677, 14236, 17795, 21354, 28472, 32031, 35590, 42708, 53385, 60503, 64062, 71180, 85416, 106770, 121006, 128124, 142360, 160155, 181509, 213540, 242012, 256248, 302515, 320310, 363018, 427080, 484024, 544527, 605030, 640620, 726036, 907545, 1089054, 1210060, 1281240, 1452072, 1815090, 2178108, 2420120, 2722635, 3630180, 4356216, 5445270, 7260360, 10890540, 21781080]

約数ペア:

[(1, 21781080), (2, 10890540), (3, 7260360), (4, 5445270), (5, 4356216), (6, 3630180), (8, 2722635), (9, 2420120), (10, 2178108), (12, 1815090), (15, 1452072), (17, 1281240), (18, 1210060), (20, 1089054), (24, 907545), (30, 726036), (34, 640620), (36, 605030), (40, 544527), (45, 484024), (51, 427080), (60, 363018), (68, 320310), (72, 302515), (85, 256248), (90, 242012), (102, 213540), (120, 181509), (136, 160155), (153, 142360), (170, 128124), (180, 121006), (204, 106770), (255, 85416), (306, 71180), (340, 64062), (360, 60503), (408, 53385), (510, 42708), (612, 35590), (680, 32031), (765, 28472), (1020, 21354), (1224, 17795), (1530, 14236), (2040, 10677), (3060, 7118), (3559, 6120)]