28718253

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:171

約数の個数: 64

約数和(自身を含む): 49248000

約数和(自身を除く): 20529747

約数列:

[1, 3, 9, 17, 19, 27, 37, 51, 57, 89, 111, 153, 171, 267, 323, 333, 459, 513, 629, 703, 801, 969, 999, 1513, 1691, 1887, 2109, 2403, 2907, 3293, 4539, 5073, 5661, 6327, 8721, 9879, 11951, 13617, 15219, 16983, 18981, 28747, 29637, 35853, 40851, 45657, 55981, 62567, 86241, 88911, 107559, 167943, 187701, 258723, 322677, 503829, 563103, 776169, 1063639, 1511487, 1689309, 3190917, 9572751, 28718253]

約数ペア:

[(1, 28718253), (3, 9572751), (9, 3190917), (17, 1689309), (19, 1511487), (27, 1063639), (37, 776169), (51, 563103), (57, 503829), (89, 322677), (111, 258723), (153, 187701), (171, 167943), (267, 107559), (323, 88911), (333, 86241), (459, 62567), (513, 55981), (629, 45657), (703, 40851), (801, 35853), (969, 29637), (999, 28747), (1513, 18981), (1691, 16983), (1887, 15219), (2109, 13617), (2403, 11951), (2907, 9879), (3293, 8721), (4539, 6327), (5073, 5661)]