21948325

素因数分解:

$5^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:107

約数の個数: 72

約数和(自身を含む): 35622720

約数和(自身を除く): 13674395

約数列:

[1, 5, 7, 19, 23, 25, 35, 41, 49, 95, 115, 133, 161, 175, 205, 245, 287, 437, 475, 575, 665, 779, 805, 931, 943, 1025, 1127, 1225, 1435, 2009, 2185, 3059, 3325, 3895, 4025, 4655, 4715, 5453, 5635, 6601, 7175, 10045, 10925, 15295, 17917, 19475, 21413, 23275, 23575, 27265, 28175, 33005, 38171, 46207, 50225, 76475, 89585, 107065, 125419, 136325, 165025, 190855, 231035, 447925, 535325, 627095, 877933, 954275, 1155175, 3135475, 4389665, 21948325]

約数ペア:

[(1, 21948325), (5, 4389665), (7, 3135475), (19, 1155175), (23, 954275), (25, 877933), (35, 627095), (41, 535325), (49, 447925), (95, 231035), (115, 190855), (133, 165025), (161, 136325), (175, 125419), (205, 107065), (245, 89585), (287, 76475), (437, 50225), (475, 46207), (575, 38171), (665, 33005), (779, 28175), (805, 27265), (931, 23575), (943, 23275), (1025, 21413), (1127, 19475), (1225, 17917), (1435, 15295), (2009, 10925), (2185, 10045), (3059, 7175), (3325, 6601), (3895, 5635), (4025, 5453), (4655, 4715)]