28664825

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{233}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 44104320

約数和(自身を除く): 15439495

約数列:

[1, 5, 7, 19, 25, 35, 37, 95, 133, 175, 185, 233, 259, 475, 665, 703, 925, 1165, 1295, 1631, 3325, 3515, 4427, 4921, 5825, 6475, 8155, 8621, 17575, 22135, 24605, 30989, 40775, 43105, 60347, 110675, 123025, 154945, 163799, 215525, 301735, 774725, 818995, 1146593, 1508675, 4094975, 5732965, 28664825]

約数ペア:

[(1, 28664825), (5, 5732965), (7, 4094975), (19, 1508675), (25, 1146593), (35, 818995), (37, 774725), (95, 301735), (133, 215525), (175, 163799), (185, 154945), (233, 123025), (259, 110675), (475, 60347), (665, 43105), (703, 40775), (925, 30989), (1165, 24605), (1295, 22135), (1631, 17575), (3325, 8621), (3515, 8155), (4427, 6475), (4921, 5825)]