21730544

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:174

約数の個数: 80

約数和(自身を含む): 48854016

約数和(自身を除く): 27123472

約数列:

[1, 2, 4, 8, 11, 16, 22, 37, 44, 47, 71, 74, 88, 94, 142, 148, 176, 188, 284, 296, 376, 407, 517, 568, 592, 752, 781, 814, 1034, 1136, 1562, 1628, 1739, 2068, 2627, 3124, 3256, 3337, 3478, 4136, 5254, 6248, 6512, 6674, 6956, 8272, 10508, 12496, 13348, 13912, 19129, 21016, 26696, 27824, 28897, 36707, 38258, 42032, 53392, 57794, 73414, 76516, 115588, 123469, 146828, 153032, 231176, 246938, 293656, 306064, 462352, 493876, 587312, 987752, 1358159, 1975504, 2716318, 5432636, 10865272, 21730544]

約数ペア:

[(1, 21730544), (2, 10865272), (4, 5432636), (8, 2716318), (11, 1975504), (16, 1358159), (22, 987752), (37, 587312), (44, 493876), (47, 462352), (71, 306064), (74, 293656), (88, 246938), (94, 231176), (142, 153032), (148, 146828), (176, 123469), (188, 115588), (284, 76516), (296, 73414), (376, 57794), (407, 53392), (517, 42032), (568, 38258), (592, 36707), (752, 28897), (781, 27824), (814, 26696), (1034, 21016), (1136, 19129), (1562, 13912), (1628, 13348), (1739, 12496), (2068, 10508), (2627, 8272), (3124, 6956), (3256, 6674), (3337, 6512), (3478, 6248), (4136, 5254)]