221555895

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{739}}^1$

素因数の和:860

約数の個数: 64

約数和(自身を含む): 409190400

約数和(自身を除く): 187634505

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 69, 79, 115, 165, 237, 253, 345, 395, 739, 759, 869, 1185, 1265, 1817, 2217, 2607, 3695, 3795, 4345, 5451, 8129, 9085, 11085, 13035, 16997, 19987, 24387, 27255, 40645, 50991, 58381, 59961, 84985, 99935, 121935, 175143, 186967, 254955, 291905, 299805, 560901, 642191, 875715, 934835, 1342763, 1926573, 2804505, 3210955, 4028289, 6713815, 9632865, 14770393, 20141445, 44311179, 73851965, 221555895]

約数ペア:

[(1, 221555895), (3, 73851965), (5, 44311179), (11, 20141445), (15, 14770393), (23, 9632865), (33, 6713815), (55, 4028289), (69, 3210955), (79, 2804505), (115, 1926573), (165, 1342763), (237, 934835), (253, 875715), (345, 642191), (395, 560901), (739, 299805), (759, 291905), (869, 254955), (1185, 186967), (1265, 175143), (1817, 121935), (2217, 99935), (2607, 84985), (3695, 59961), (3795, 58381), (4345, 50991), (5451, 40645), (8129, 27255), (9085, 24387), (11085, 19987), (13035, 16997)]