861520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1$

素因数の和:124

約数の個数: 60

約数和(自身を含む): 2226420

約数和(自身を除く): 1364900

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 89, 110, 121, 176, 178, 220, 242, 356, 440, 445, 484, 605, 712, 880, 890, 968, 979, 1210, 1424, 1780, 1936, 1958, 2420, 3560, 3916, 4840, 4895, 7120, 7832, 9680, 9790, 10769, 15664, 19580, 21538, 39160, 43076, 53845, 78320, 86152, 107690, 172304, 215380, 430760, 861520]

約数ペア:

[(1, 861520), (2, 430760), (4, 215380), (5, 172304), (8, 107690), (10, 86152), (11, 78320), (16, 53845), (20, 43076), (22, 39160), (40, 21538), (44, 19580), (55, 15664), (80, 10769), (88, 9790), (89, 9680), (110, 7832), (121, 7120), (176, 4895), (178, 4840), (220, 3916), (242, 3560), (356, 2420), (440, 1958), (445, 1936), (484, 1780), (605, 1424), (712, 1210), (880, 979), (890, 968)]