39968120

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:312

約数の個数: 64

約数和(自身を含む): 92664000

約数和(自身を除く): 52695880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 103, 109, 178, 206, 218, 356, 412, 436, 445, 515, 545, 712, 824, 872, 890, 1030, 1090, 1780, 2060, 2180, 3560, 4120, 4360, 9167, 9701, 11227, 18334, 19402, 22454, 36668, 38804, 44908, 45835, 48505, 56135, 73336, 77608, 89816, 91670, 97010, 112270, 183340, 194020, 224540, 366680, 388040, 449080, 999203, 1998406, 3996812, 4996015, 7993624, 9992030, 19984060, 39968120]

約数ペア:

[(1, 39968120), (2, 19984060), (4, 9992030), (5, 7993624), (8, 4996015), (10, 3996812), (20, 1998406), (40, 999203), (89, 449080), (103, 388040), (109, 366680), (178, 224540), (206, 194020), (218, 183340), (356, 112270), (412, 97010), (436, 91670), (445, 89816), (515, 77608), (545, 73336), (712, 56135), (824, 48505), (872, 45835), (890, 44908), (1030, 38804), (1090, 36668), (1780, 22454), (2060, 19402), (2180, 18334), (3560, 11227), (4120, 9701), (4360, 9167)]