21031854291

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{457}}^1\times {\mathrm{10903}}^1$

素因数の和:11440

約数の個数: 48

約数和(自身を含む): 35317794304

約数和(自身を除く): 14285940013

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 457, 469, 603, 1371, 1407, 3199, 4113, 4221, 9597, 10903, 28791, 30619, 32709, 76321, 91857, 98127, 214333, 228963, 275571, 642999, 686889, 730501, 1928997, 2191503, 4982671, 5113507, 6574509, 14948013, 15340521, 34878697, 44844039, 46021563, 104636091, 313908273, 333838957, 1001516871, 2336872699, 3004550613, 7010618097, 21031854291]

約数ペア:

[(1, 21031854291), (3, 7010618097), (7, 3004550613), (9, 2336872699), (21, 1001516871), (63, 333838957), (67, 313908273), (201, 104636091), (457, 46021563), (469, 44844039), (603, 34878697), (1371, 15340521), (1407, 14948013), (3199, 6574509), (4113, 5113507), (4221, 4982671), (9597, 2191503), (10903, 1928997), (28791, 730501), (30619, 686889), (32709, 642999), (76321, 275571), (91857, 228963), (98127, 214333)]