38221940

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 82328400

約数和(自身を除く): 44106460

約数列:

[1, 2, 4, 5, 10, 20, 89, 109, 178, 197, 218, 356, 394, 436, 445, 545, 788, 890, 985, 1090, 1780, 1970, 2180, 3940, 9701, 17533, 19402, 21473, 35066, 38804, 42946, 48505, 70132, 85892, 87665, 97010, 107365, 175330, 194020, 214730, 350660, 429460, 1911097, 3822194, 7644388, 9555485, 19110970, 38221940]

約数ペア:

[(1, 38221940), (2, 19110970), (4, 9555485), (5, 7644388), (10, 3822194), (20, 1911097), (89, 429460), (109, 350660), (178, 214730), (197, 194020), (218, 175330), (356, 107365), (394, 97010), (436, 87665), (445, 85892), (545, 70132), (788, 48505), (890, 42946), (985, 38804), (1090, 35066), (1780, 21473), (1970, 19402), (2180, 17533), (3940, 9701)]