78320

素因数分解:

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

素因数の和:113

約数の個数: 40

約数和(自身を含む): 200880

約数和(自身を除く): 122560

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 89, 110, 176, 178, 220, 356, 440, 445, 712, 880, 890, 979, 1424, 1780, 1958, 3560, 3916, 4895, 7120, 7832, 9790, 15664, 19580, 39160, 78320]

約数ペア:

[(1, 78320), (2, 39160), (4, 19580), (5, 15664), (8, 9790), (10, 7832), (11, 7120), (16, 4895), (20, 3916), (22, 3560), (40, 1958), (44, 1780), (55, 1424), (80, 979), (88, 890), (89, 880), (110, 712), (176, 445), (178, 440), (220, 356)]