213994948

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{431}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 406425600

約数和(自身を除く): 192430652

約数列:

[1, 2, 4, 19, 38, 47, 76, 94, 139, 188, 278, 431, 556, 862, 893, 1724, 1786, 2641, 3572, 5282, 6533, 8189, 10564, 13066, 16378, 20257, 26132, 32756, 40514, 59909, 81028, 119818, 124127, 239636, 248254, 384883, 496508, 769766, 1138271, 1539532, 2276542, 2815723, 4553084, 5631446, 11262892, 53498737, 106997474, 213994948]

約数ペア:

[(1, 213994948), (2, 106997474), (4, 53498737), (19, 11262892), (38, 5631446), (47, 4553084), (76, 2815723), (94, 2276542), (139, 1539532), (188, 1138271), (278, 769766), (431, 496508), (556, 384883), (862, 248254), (893, 239636), (1724, 124127), (1786, 119818), (2641, 81028), (3572, 59909), (5282, 40514), (6533, 32756), (8189, 26132), (10564, 20257), (13066, 16378)]