385439420

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{2741}}^1$

素因数の和:2918

約数の個数: 48

約数和(自身を含む): 829180800

約数和(自身を除く): 443741380

約数列:

[1, 2, 4, 5, 10, 20, 79, 89, 158, 178, 316, 356, 395, 445, 790, 890, 1580, 1780, 2741, 5482, 7031, 10964, 13705, 14062, 27410, 28124, 35155, 54820, 70310, 140620, 216539, 243949, 433078, 487898, 866156, 975796, 1082695, 1219745, 2165390, 2439490, 4330780, 4878980, 19271971, 38543942, 77087884, 96359855, 192719710, 385439420]

約数ペア:

[(1, 385439420), (2, 192719710), (4, 96359855), (5, 77087884), (10, 38543942), (20, 19271971), (79, 4878980), (89, 4330780), (158, 2439490), (178, 2165390), (316, 1219745), (356, 1082695), (395, 975796), (445, 866156), (790, 487898), (890, 433078), (1580, 243949), (1780, 216539), (2741, 140620), (5482, 70310), (7031, 54820), (10964, 35155), (13705, 28124), (14062, 27410)]