21201948

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{223}}^1$

素因数の和:391

約数の個数: 72

約数和(自身を含む): 57075200

約数和(自身を除く): 35873252

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 139, 171, 223, 228, 278, 342, 417, 446, 556, 669, 684, 834, 892, 1251, 1338, 1668, 2007, 2502, 2641, 2676, 4014, 4237, 5004, 5282, 7923, 8028, 8474, 10564, 12711, 15846, 16948, 23769, 25422, 30997, 31692, 38133, 47538, 50844, 61994, 76266, 92991, 95076, 123988, 152532, 185982, 278973, 371964, 557946, 588943, 1115892, 1177886, 1766829, 2355772, 3533658, 5300487, 7067316, 10600974, 21201948]

約数ペア:

[(1, 21201948), (2, 10600974), (3, 7067316), (4, 5300487), (6, 3533658), (9, 2355772), (12, 1766829), (18, 1177886), (19, 1115892), (36, 588943), (38, 557946), (57, 371964), (76, 278973), (114, 185982), (139, 152532), (171, 123988), (223, 95076), (228, 92991), (278, 76266), (342, 61994), (417, 50844), (446, 47538), (556, 38133), (669, 31692), (684, 30997), (834, 25422), (892, 23769), (1251, 16948), (1338, 15846), (1668, 12711), (2007, 10564), (2502, 8474), (2641, 8028), (2676, 7923), (4014, 5282), (4237, 5004)]