77887840

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{25621}}^1$

素因数の和:25655

約数の個数: 48

約数和(自身を含む): 193702320

約数和(自身を除く): 115814480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 25621, 51242, 102484, 128105, 204968, 256210, 409936, 486799, 512420, 819872, 973598, 1024840, 1947196, 2049680, 2433995, 3894392, 4099360, 4867990, 7788784, 9735980, 15577568, 19471960, 38943920, 77887840]

約数ペア:

[(1, 77887840), (2, 38943920), (4, 19471960), (5, 15577568), (8, 9735980), (10, 7788784), (16, 4867990), (19, 4099360), (20, 3894392), (32, 2433995), (38, 2049680), (40, 1947196), (76, 1024840), (80, 973598), (95, 819872), (152, 512420), (160, 486799), (190, 409936), (304, 256210), (380, 204968), (608, 128105), (760, 102484), (1520, 51242), (3040, 25621)]