21992985

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^2$

素因数の和:112

約数の個数: 96

約数和(自身を含む): 48625920

約数和(自身を除く): 26632935

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 35, 37, 45, 51, 63, 85, 105, 111, 119, 135, 153, 185, 189, 255, 259, 315, 333, 357, 459, 555, 595, 629, 765, 777, 945, 999, 1071, 1295, 1369, 1665, 1785, 1887, 2295, 2331, 3145, 3213, 3885, 4107, 4403, 4995, 5355, 5661, 6845, 6993, 9435, 9583, 11655, 12321, 13209, 16065, 16983, 20535, 22015, 23273, 28305, 28749, 34965, 36963, 39627, 47915, 61605, 66045, 69819, 84915, 86247, 116365, 118881, 143745, 162911, 184815, 198135, 209457, 258741, 349095, 431235, 488733, 594405, 628371, 814555, 1047285, 1293705, 1466199, 2443665, 3141855, 4398597, 7330995, 21992985]

約数ペア:

[(1, 21992985), (3, 7330995), (5, 4398597), (7, 3141855), (9, 2443665), (15, 1466199), (17, 1293705), (21, 1047285), (27, 814555), (35, 628371), (37, 594405), (45, 488733), (51, 431235), (63, 349095), (85, 258741), (105, 209457), (111, 198135), (119, 184815), (135, 162911), (153, 143745), (185, 118881), (189, 116365), (255, 86247), (259, 84915), (315, 69819), (333, 66045), (357, 61605), (459, 47915), (555, 39627), (595, 36963), (629, 34965), (765, 28749), (777, 28305), (945, 23273), (999, 22015), (1071, 20535), (1295, 16983), (1369, 16065), (1665, 13209), (1785, 12321), (1887, 11655), (2295, 9583), (2331, 9435), (3145, 6993), (3213, 6845), (3885, 5661), (4107, 5355), (4403, 4995)]