81364480

素因数分解:

$2^9\times 5^1\times {\mathrm{37}}^1\times {\mathrm{859}}^1$

素因数の和:919

約数の個数: 80

約数和(自身を含む): 200589840

約数和(自身を除く): 119225360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 256, 296, 320, 370, 512, 592, 640, 740, 859, 1184, 1280, 1480, 1718, 2368, 2560, 2960, 3436, 4295, 4736, 5920, 6872, 8590, 9472, 11840, 13744, 17180, 18944, 23680, 27488, 31783, 34360, 47360, 54976, 63566, 68720, 94720, 109952, 127132, 137440, 158915, 219904, 254264, 274880, 317830, 439808, 508528, 549760, 635660, 1017056, 1099520, 1271320, 2034112, 2199040, 2542640, 4068224, 5085280, 8136448, 10170560, 16272896, 20341120, 40682240, 81364480]

約数ペア:

[(1, 81364480), (2, 40682240), (4, 20341120), (5, 16272896), (8, 10170560), (10, 8136448), (16, 5085280), (20, 4068224), (32, 2542640), (37, 2199040), (40, 2034112), (64, 1271320), (74, 1099520), (80, 1017056), (128, 635660), (148, 549760), (160, 508528), (185, 439808), (256, 317830), (296, 274880), (320, 254264), (370, 219904), (512, 158915), (592, 137440), (640, 127132), (740, 109952), (859, 94720), (1184, 68720), (1280, 63566), (1480, 54976), (1718, 47360), (2368, 34360), (2560, 31783), (2960, 27488), (3436, 23680), (4295, 18944), (4736, 17180), (5920, 13744), (6872, 11840), (8590, 9472)]