21365260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:271

約数の個数: 96

約数和(自身を含む): 55738368

約数和(自身を除く): 34373108

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 47, 68, 70, 85, 94, 119, 140, 170, 188, 191, 235, 238, 329, 340, 382, 470, 476, 595, 658, 764, 799, 940, 955, 1190, 1316, 1337, 1598, 1645, 1910, 2380, 2674, 3196, 3247, 3290, 3820, 3995, 5348, 5593, 6494, 6580, 6685, 7990, 8977, 11186, 12988, 13370, 15980, 16235, 17954, 22372, 22729, 26740, 27965, 32470, 35908, 44885, 45458, 55930, 62839, 64940, 89770, 90916, 111860, 113645, 125678, 152609, 179540, 227290, 251356, 305218, 314195, 454580, 610436, 628390, 763045, 1068263, 1256780, 1526090, 2136526, 3052180, 4273052, 5341315, 10682630, 21365260]

約数ペア:

[(1, 21365260), (2, 10682630), (4, 5341315), (5, 4273052), (7, 3052180), (10, 2136526), (14, 1526090), (17, 1256780), (20, 1068263), (28, 763045), (34, 628390), (35, 610436), (47, 454580), (68, 314195), (70, 305218), (85, 251356), (94, 227290), (119, 179540), (140, 152609), (170, 125678), (188, 113645), (191, 111860), (235, 90916), (238, 89770), (329, 64940), (340, 62839), (382, 55930), (470, 45458), (476, 44885), (595, 35908), (658, 32470), (764, 27965), (799, 26740), (940, 22729), (955, 22372), (1190, 17954), (1316, 16235), (1337, 15980), (1598, 13370), (1645, 12988), (1910, 11186), (2380, 8977), (2674, 7990), (3196, 6685), (3247, 6580), (3290, 6494), (3820, 5593), (3995, 5348)]