156640

素因数分解:

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

素因数の和:115

約数の個数: 48

約数和(自身を含む): 408240

約数和(自身を除く): 251600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 89, 110, 160, 176, 178, 220, 352, 356, 440, 445, 712, 880, 890, 979, 1424, 1760, 1780, 1958, 2848, 3560, 3916, 4895, 7120, 7832, 9790, 14240, 15664, 19580, 31328, 39160, 78320, 156640]

約数ペア:

[(1, 156640), (2, 78320), (4, 39160), (5, 31328), (8, 19580), (10, 15664), (11, 14240), (16, 9790), (20, 7832), (22, 7120), (32, 4895), (40, 3916), (44, 3560), (55, 2848), (80, 1958), (88, 1780), (89, 1760), (110, 1424), (160, 979), (176, 890), (178, 880), (220, 712), (352, 445), (356, 440)]