21045660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{439}}^1$

素因数の和:515

約数の個数: 96

約数和(自身を含む): 63866880

約数和(自身を除く): 42821220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 47, 51, 60, 68, 85, 94, 102, 141, 170, 188, 204, 235, 255, 282, 340, 439, 470, 510, 564, 705, 799, 878, 940, 1020, 1317, 1410, 1598, 1756, 2195, 2397, 2634, 2820, 3196, 3995, 4390, 4794, 5268, 6585, 7463, 7990, 8780, 9588, 11985, 13170, 14926, 15980, 20633, 22389, 23970, 26340, 29852, 37315, 41266, 44778, 47940, 61899, 74630, 82532, 89556, 103165, 111945, 123798, 149260, 206330, 223890, 247596, 309495, 350761, 412660, 447780, 618990, 701522, 1052283, 1237980, 1403044, 1753805, 2104566, 3507610, 4209132, 5261415, 7015220, 10522830, 21045660]

約数ペア:

[(1, 21045660), (2, 10522830), (3, 7015220), (4, 5261415), (5, 4209132), (6, 3507610), (10, 2104566), (12, 1753805), (15, 1403044), (17, 1237980), (20, 1052283), (30, 701522), (34, 618990), (47, 447780), (51, 412660), (60, 350761), (68, 309495), (85, 247596), (94, 223890), (102, 206330), (141, 149260), (170, 123798), (188, 111945), (204, 103165), (235, 89556), (255, 82532), (282, 74630), (340, 61899), (439, 47940), (470, 44778), (510, 41266), (564, 37315), (705, 29852), (799, 26340), (878, 23970), (940, 22389), (1020, 20633), (1317, 15980), (1410, 14926), (1598, 13170), (1756, 11985), (2195, 9588), (2397, 8780), (2634, 7990), (2820, 7463), (3196, 6585), (3995, 5268), (4390, 4794)]