28192580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{439}}^1$

素因数の和:493

約数の個数: 72

約数和(自身を含む): 67636800

約数和(自身を除く): 39444220

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 169, 190, 247, 260, 338, 380, 439, 494, 676, 845, 878, 988, 1235, 1690, 1756, 2195, 2470, 3211, 3380, 4390, 4940, 5707, 6422, 8341, 8780, 11414, 12844, 16055, 16682, 22828, 28535, 32110, 33364, 41705, 57070, 64220, 74191, 83410, 108433, 114140, 148382, 166820, 216866, 296764, 370955, 433732, 542165, 741910, 1084330, 1409629, 1483820, 2168660, 2819258, 5638516, 7048145, 14096290, 28192580]

約数ペア:

[(1, 28192580), (2, 14096290), (4, 7048145), (5, 5638516), (10, 2819258), (13, 2168660), (19, 1483820), (20, 1409629), (26, 1084330), (38, 741910), (52, 542165), (65, 433732), (76, 370955), (95, 296764), (130, 216866), (169, 166820), (190, 148382), (247, 114140), (260, 108433), (338, 83410), (380, 74191), (439, 64220), (494, 57070), (676, 41705), (845, 33364), (878, 32110), (988, 28535), (1235, 22828), (1690, 16682), (1756, 16055), (2195, 12844), (2470, 11414), (3211, 8780), (3380, 8341), (4390, 6422), (4940, 5707)]