19964511

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{2663}}^1$

素因数の和:2700

約数の個数: 36

約数和(自身を含む): 35532432

約数和(自身を除く): 15567921

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 147, 153, 357, 441, 833, 1071, 2499, 2663, 7497, 7989, 18641, 23967, 45271, 55923, 130487, 135813, 167769, 316897, 391461, 407439, 950691, 1174383, 2218279, 2852073, 6654837, 19964511]

約数ペア:

[(1, 19964511), (3, 6654837), (7, 2852073), (9, 2218279), (17, 1174383), (21, 950691), (49, 407439), (51, 391461), (63, 316897), (119, 167769), (147, 135813), (153, 130487), (357, 55923), (441, 45271), (833, 23967), (1071, 18641), (2499, 7989), (2663, 7497)]