28988775

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{6781}}^1$

素因数の和:6816

約数の個数: 36

約数和(自身を含む): 54662920

約数和(自身を除く): 25674145

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 75, 95, 171, 225, 285, 475, 855, 1425, 4275, 6781, 20343, 33905, 61029, 101715, 128839, 169525, 305145, 386517, 508575, 644195, 1159551, 1525725, 1932585, 3220975, 5797755, 9662925, 28988775]

約数ペア:

[(1, 28988775), (3, 9662925), (5, 5797755), (9, 3220975), (15, 1932585), (19, 1525725), (25, 1159551), (45, 644195), (57, 508575), (75, 386517), (95, 305145), (171, 169525), (225, 128839), (285, 101715), (475, 61029), (855, 33905), (1425, 20343), (4275, 6781)]