28160517

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 50761728

約数和(自身を除く): 22601211

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 71, 77, 101, 119, 187, 213, 231, 303, 357, 497, 561, 707, 781, 1111, 1207, 1309, 1491, 1717, 2121, 2343, 3333, 3621, 3927, 5151, 5467, 7171, 7777, 8449, 12019, 13277, 16401, 18887, 21513, 23331, 25347, 36057, 39831, 50197, 56661, 78881, 92939, 121907, 132209, 150591, 236643, 278817, 365721, 396627, 552167, 853349, 1340977, 1656501, 2560047, 4022931, 9386839, 28160517]

約数ペア:

[(1, 28160517), (3, 9386839), (7, 4022931), (11, 2560047), (17, 1656501), (21, 1340977), (33, 853349), (51, 552167), (71, 396627), (77, 365721), (101, 278817), (119, 236643), (187, 150591), (213, 132209), (231, 121907), (303, 92939), (357, 78881), (497, 56661), (561, 50197), (707, 39831), (781, 36057), (1111, 25347), (1207, 23331), (1309, 21513), (1491, 18887), (1717, 16401), (2121, 13277), (2343, 12019), (3333, 8449), (3621, 7777), (3927, 7171), (5151, 5467)]