21709935

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:137

約数の個数: 96

約数和(自身を含む): 44815680

約数和(自身を除く): 23105745

約数列:

[1, 3, 5, 9, 13, 15, 17, 37, 39, 45, 51, 59, 65, 85, 111, 117, 153, 177, 185, 195, 221, 255, 295, 333, 481, 531, 555, 585, 629, 663, 765, 767, 885, 1003, 1105, 1443, 1665, 1887, 1989, 2183, 2301, 2405, 2655, 3009, 3145, 3315, 3835, 4329, 5015, 5661, 6549, 6903, 7215, 8177, 9027, 9435, 9945, 10915, 11505, 13039, 15045, 19647, 21645, 24531, 28305, 28379, 32745, 34515, 37111, 39117, 40885, 45135, 65195, 73593, 85137, 98235, 111333, 117351, 122655, 141895, 185555, 195585, 255411, 333999, 367965, 425685, 482443, 556665, 586755, 1277055, 1447329, 1669995, 2412215, 4341987, 7236645, 21709935]

約数ペア:

[(1, 21709935), (3, 7236645), (5, 4341987), (9, 2412215), (13, 1669995), (15, 1447329), (17, 1277055), (37, 586755), (39, 556665), (45, 482443), (51, 425685), (59, 367965), (65, 333999), (85, 255411), (111, 195585), (117, 185555), (153, 141895), (177, 122655), (185, 117351), (195, 111333), (221, 98235), (255, 85137), (295, 73593), (333, 65195), (481, 45135), (531, 40885), (555, 39117), (585, 37111), (629, 34515), (663, 32745), (765, 28379), (767, 28305), (885, 24531), (1003, 21645), (1105, 19647), (1443, 15045), (1665, 13039), (1887, 11505), (1989, 10915), (2183, 9945), (2301, 9435), (2405, 9027), (2655, 8177), (3009, 7215), (3145, 6903), (3315, 6549), (3835, 5661), (4329, 5015)]