538756875

素因数分解:

$3^2\times 5^4\times {\mathrm{19}}^1\times {\mathrm{71}}^2$

素因数の和:187

約数の個数: 90

約数和(自身を含む): 1038245780

約数和(自身を除く): 499488905

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 71, 75, 95, 125, 171, 213, 225, 285, 355, 375, 475, 625, 639, 855, 1065, 1125, 1349, 1425, 1775, 1875, 2375, 3195, 4047, 4275, 5041, 5325, 5625, 6745, 7125, 8875, 11875, 12141, 15123, 15975, 20235, 21375, 25205, 26625, 33725, 35625, 44375, 45369, 60705, 75615, 79875, 95779, 101175, 106875, 126025, 133125, 168625, 226845, 287337, 303525, 378075, 399375, 478895, 505875, 630125, 843125, 862011, 1134225, 1436685, 1517625, 1890375, 2394475, 2529375, 3150625, 4310055, 5671125, 7183425, 7588125, 9451875, 11972375, 21550275, 28355625, 35917125, 59861875, 107751375, 179585625, 538756875]

約数ペア:

[(1, 538756875), (3, 179585625), (5, 107751375), (9, 59861875), (15, 35917125), (19, 28355625), (25, 21550275), (45, 11972375), (57, 9451875), (71, 7588125), (75, 7183425), (95, 5671125), (125, 4310055), (171, 3150625), (213, 2529375), (225, 2394475), (285, 1890375), (355, 1517625), (375, 1436685), (475, 1134225), (625, 862011), (639, 843125), (855, 630125), (1065, 505875), (1125, 478895), (1349, 399375), (1425, 378075), (1775, 303525), (1875, 287337), (2375, 226845), (3195, 168625), (4047, 133125), (4275, 126025), (5041, 106875), (5325, 101175), (5625, 95779), (6745, 79875), (7125, 75615), (8875, 60705), (11875, 45369), (12141, 44375), (15123, 35625), (15975, 33725), (20235, 26625), (21375, 25205)]