28279980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8269}}^1$

素因数の和:8303

約数の個数: 72

約数和(自身を含む): 90308400

約数和(自身を除く): 62028420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 8269, 16538, 24807, 33076, 41345, 49614, 74421, 82690, 99228, 124035, 148842, 157111, 165380, 248070, 297684, 314222, 372105, 471333, 496140, 628444, 744210, 785555, 942666, 1413999, 1488420, 1571110, 1885332, 2356665, 2827998, 3142220, 4713330, 5655996, 7069995, 9426660, 14139990, 28279980]

約数ペア:

[(1, 28279980), (2, 14139990), (3, 9426660), (4, 7069995), (5, 5655996), (6, 4713330), (9, 3142220), (10, 2827998), (12, 2356665), (15, 1885332), (18, 1571110), (19, 1488420), (20, 1413999), (30, 942666), (36, 785555), (38, 744210), (45, 628444), (57, 496140), (60, 471333), (76, 372105), (90, 314222), (95, 297684), (114, 248070), (171, 165380), (180, 157111), (190, 148842), (228, 124035), (285, 99228), (342, 82690), (380, 74421), (570, 49614), (684, 41345), (855, 33076), (1140, 24807), (1710, 16538), (3420, 8269)]