21860895

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 43600896

約数和(自身を除く): 21740001

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 37, 51, 85, 105, 111, 119, 185, 255, 259, 331, 357, 555, 595, 629, 777, 993, 1295, 1655, 1785, 1887, 2317, 3145, 3885, 4403, 4965, 5627, 6951, 9435, 11585, 12247, 13209, 16881, 22015, 28135, 34755, 36741, 39389, 61235, 66045, 84405, 85729, 118167, 183705, 196945, 208199, 257187, 428645, 590835, 624597, 1040995, 1285935, 1457393, 3122985, 4372179, 7286965, 21860895]

約数ペア:

[(1, 21860895), (3, 7286965), (5, 4372179), (7, 3122985), (15, 1457393), (17, 1285935), (21, 1040995), (35, 624597), (37, 590835), (51, 428645), (85, 257187), (105, 208199), (111, 196945), (119, 183705), (185, 118167), (255, 85729), (259, 84405), (331, 66045), (357, 61235), (555, 39389), (595, 36741), (629, 34755), (777, 28135), (993, 22015), (1295, 16881), (1655, 13209), (1785, 12247), (1887, 11585), (2317, 9435), (3145, 6951), (3885, 5627), (4403, 4965)]