28278525

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{227}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 51568128

約数和(自身を除く): 23289603

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 151, 165, 227, 275, 453, 681, 755, 825, 1135, 1661, 2265, 2497, 3405, 3775, 4983, 5675, 7491, 8305, 11325, 12485, 17025, 24915, 34277, 37455, 41525, 62425, 102831, 124575, 171385, 187275, 377047, 514155, 856925, 1131141, 1885235, 2570775, 5655705, 9426175, 28278525]

約数ペア:

[(1, 28278525), (3, 9426175), (5, 5655705), (11, 2570775), (15, 1885235), (25, 1131141), (33, 856925), (55, 514155), (75, 377047), (151, 187275), (165, 171385), (227, 124575), (275, 102831), (453, 62425), (681, 41525), (755, 37455), (825, 34277), (1135, 24915), (1661, 17025), (2265, 12485), (2497, 11325), (3405, 8305), (3775, 7491), (4983, 5675)]