64867840

素因数分解:

$2^9\times 5^1\times {\mathrm{25339}}^1$

素因数の和:25362

約数の個数: 40

約数和(自身を含む): 155536920

約数和(自身を除く): 90669080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 25339, 50678, 101356, 126695, 202712, 253390, 405424, 506780, 810848, 1013560, 1621696, 2027120, 3243392, 4054240, 6486784, 8108480, 12973568, 16216960, 32433920, 64867840]

約数ペア:

[(1, 64867840), (2, 32433920), (4, 16216960), (5, 12973568), (8, 8108480), (10, 6486784), (16, 4054240), (20, 3243392), (32, 2027120), (40, 1621696), (64, 1013560), (80, 810848), (128, 506780), (160, 405424), (256, 253390), (320, 202712), (512, 126695), (640, 101356), (1280, 50678), (2560, 25339)]