20386905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{929}}^1$

素因数の和:974

約数の個数: 64

約数和(自身を含む): 42854400

約数和(自身を除く): 22467495

約数列:

[1, 3, 5, 7, 11, 15, 19, 21, 33, 35, 55, 57, 77, 95, 105, 133, 165, 209, 231, 285, 385, 399, 627, 665, 929, 1045, 1155, 1463, 1995, 2787, 3135, 4389, 4645, 6503, 7315, 10219, 13935, 17651, 19509, 21945, 30657, 32515, 51095, 52953, 71533, 88255, 97545, 123557, 153285, 194161, 214599, 264765, 357665, 370671, 582483, 617785, 970805, 1072995, 1359127, 1853355, 2912415, 4077381, 6795635, 20386905]

約数ペア:

[(1, 20386905), (3, 6795635), (5, 4077381), (7, 2912415), (11, 1853355), (15, 1359127), (19, 1072995), (21, 970805), (33, 617785), (35, 582483), (55, 370671), (57, 357665), (77, 264765), (95, 214599), (105, 194161), (133, 153285), (165, 123557), (209, 97545), (231, 88255), (285, 71533), (385, 52953), (399, 51095), (627, 32515), (665, 30657), (929, 21945), (1045, 19509), (1155, 17651), (1463, 13935), (1995, 10219), (2787, 7315), (3135, 6503), (4389, 4645)]