21470540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:327

約数の個数: 96

約数和(自身を含む): 56899584

約数和(自身を除く): 35429044

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 47, 52, 65, 70, 91, 94, 130, 140, 182, 188, 235, 251, 260, 329, 364, 455, 470, 502, 611, 658, 910, 940, 1004, 1222, 1255, 1316, 1645, 1757, 1820, 2444, 2510, 3055, 3263, 3290, 3514, 4277, 5020, 6110, 6526, 6580, 7028, 8554, 8785, 11797, 12220, 13052, 16315, 17108, 17570, 21385, 22841, 23594, 32630, 35140, 42770, 45682, 47188, 58985, 65260, 82579, 85540, 91364, 114205, 117970, 153361, 165158, 228410, 235940, 306722, 330316, 412895, 456820, 613444, 766805, 825790, 1073527, 1533610, 1651580, 2147054, 3067220, 4294108, 5367635, 10735270, 21470540]

約数ペア:

[(1, 21470540), (2, 10735270), (4, 5367635), (5, 4294108), (7, 3067220), (10, 2147054), (13, 1651580), (14, 1533610), (20, 1073527), (26, 825790), (28, 766805), (35, 613444), (47, 456820), (52, 412895), (65, 330316), (70, 306722), (91, 235940), (94, 228410), (130, 165158), (140, 153361), (182, 117970), (188, 114205), (235, 91364), (251, 85540), (260, 82579), (329, 65260), (364, 58985), (455, 47188), (470, 45682), (502, 42770), (611, 35140), (658, 32630), (910, 23594), (940, 22841), (1004, 21385), (1222, 17570), (1255, 17108), (1316, 16315), (1645, 13052), (1757, 12220), (1820, 11797), (2444, 8785), (2510, 8554), (3055, 7028), (3263, 6580), (3290, 6526), (3514, 6110), (4277, 5020)]