81864825

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{283}}^1$

素因数の和:351

約数の個数: 96

約数和(自身を含む): 169036800

約数和(自身を除く): 87171975

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 29, 35, 57, 75, 87, 95, 105, 133, 145, 175, 203, 283, 285, 399, 435, 475, 525, 551, 609, 665, 725, 849, 1015, 1415, 1425, 1653, 1981, 1995, 2175, 2755, 3045, 3325, 3857, 4245, 5075, 5377, 5943, 7075, 8207, 8265, 9905, 9975, 11571, 13775, 15225, 16131, 19285, 21225, 24621, 26885, 29715, 37639, 41035, 41325, 49525, 57449, 57855, 80655, 96425, 112917, 123105, 134425, 148575, 155933, 172347, 188195, 205175, 287245, 289275, 403275, 467799, 564585, 615525, 779665, 861735, 940975, 1091531, 1436225, 2338995, 2822925, 3274593, 3898325, 4308675, 5457655, 11694975, 16372965, 27288275, 81864825]

約数ペア:

[(1, 81864825), (3, 27288275), (5, 16372965), (7, 11694975), (15, 5457655), (19, 4308675), (21, 3898325), (25, 3274593), (29, 2822925), (35, 2338995), (57, 1436225), (75, 1091531), (87, 940975), (95, 861735), (105, 779665), (133, 615525), (145, 564585), (175, 467799), (203, 403275), (283, 289275), (285, 287245), (399, 205175), (435, 188195), (475, 172347), (525, 155933), (551, 148575), (609, 134425), (665, 123105), (725, 112917), (849, 96425), (1015, 80655), (1415, 57855), (1425, 57449), (1653, 49525), (1981, 41325), (1995, 41035), (2175, 37639), (2755, 29715), (3045, 26885), (3325, 24621), (3857, 21225), (4245, 19285), (5075, 16131), (5377, 15225), (5943, 13775), (7075, 11571), (8207, 9975), (8265, 9905)]