21666645

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1$

素因数の和:92

約数の個数: 144

約数和(自身を含む): 52071552

約数和(自身を除く): 30404907

約数列:

[1, 3, 5, 7, 9, 11, 13, 15, 21, 33, 35, 37, 39, 45, 55, 63, 65, 77, 91, 99, 105, 111, 117, 143, 165, 169, 185, 195, 231, 259, 273, 315, 333, 385, 407, 429, 455, 481, 495, 507, 555, 585, 693, 715, 777, 819, 845, 1001, 1155, 1183, 1221, 1287, 1295, 1365, 1443, 1521, 1665, 1859, 2035, 2145, 2331, 2405, 2535, 2849, 3003, 3367, 3465, 3549, 3663, 3885, 4095, 4329, 5005, 5291, 5577, 5915, 6105, 6253, 6435, 7215, 7605, 8547, 9009, 9295, 10101, 10647, 11655, 13013, 14245, 15015, 15873, 16731, 16835, 17745, 18315, 18759, 21645, 25641, 26455, 27885, 30303, 31265, 37037, 39039, 42735, 43771, 45045, 47619, 50505, 53235, 56277, 65065, 68783, 79365, 83655, 93795, 111111, 117117, 128205, 131313, 151515, 185185, 195195, 206349, 218855, 238095, 281385, 333333, 343915, 393939, 481481, 555555, 585585, 619047, 656565, 1031745, 1444443, 1666665, 1969695, 2407405, 3095235, 4333329, 7222215, 21666645]

約数ペア:

[(1, 21666645), (3, 7222215), (5, 4333329), (7, 3095235), (9, 2407405), (11, 1969695), (13, 1666665), (15, 1444443), (21, 1031745), (33, 656565), (35, 619047), (37, 585585), (39, 555555), (45, 481481), (55, 393939), (63, 343915), (65, 333333), (77, 281385), (91, 238095), (99, 218855), (105, 206349), (111, 195195), (117, 185185), (143, 151515), (165, 131313), (169, 128205), (185, 117117), (195, 111111), (231, 93795), (259, 83655), (273, 79365), (315, 68783), (333, 65065), (385, 56277), (407, 53235), (429, 50505), (455, 47619), (481, 45045), (495, 43771), (507, 42735), (555, 39039), (585, 37037), (693, 31265), (715, 30303), (777, 27885), (819, 26455), (845, 25641), (1001, 21645), (1155, 18759), (1183, 18315), (1221, 17745), (1287, 16835), (1295, 16731), (1365, 15873), (1443, 15015), (1521, 14245), (1665, 13013), (1859, 11655), (2035, 10647), (2145, 10101), (2331, 9295), (2405, 9009), (2535, 8547), (2849, 7605), (3003, 7215), (3367, 6435), (3465, 6253), (3549, 6105), (3663, 5915), (3885, 5577), (4095, 5291), (4329, 5005)]