77440

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^2$

素因数の和:41

約数の個数: 48

約数和(自身を含む): 203490

約数和(自身を除く): 126050

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 121, 128, 160, 176, 220, 242, 320, 352, 440, 484, 605, 640, 704, 880, 968, 1210, 1408, 1760, 1936, 2420, 3520, 3872, 4840, 7040, 7744, 9680, 15488, 19360, 38720, 77440]

約数ペア:

[(1, 77440), (2, 38720), (4, 19360), (5, 15488), (8, 9680), (10, 7744), (11, 7040), (16, 4840), (20, 3872), (22, 3520), (32, 2420), (40, 1936), (44, 1760), (55, 1408), (64, 1210), (80, 968), (88, 880), (110, 704), (121, 640), (128, 605), (160, 484), (176, 440), (220, 352), (242, 320)]