19942615

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{277}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 31945536

約数和(自身を除く): 12002921

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 121, 187, 277, 385, 595, 605, 847, 935, 1309, 1385, 1939, 2057, 3047, 4235, 4709, 6545, 9695, 10285, 14399, 15235, 21329, 23545, 32963, 33517, 51799, 71995, 106645, 164815, 167585, 234619, 258995, 362593, 569789, 1173095, 1812965, 2848945, 3988523, 19942615]

約数ペア:

[(1, 19942615), (5, 3988523), (7, 2848945), (11, 1812965), (17, 1173095), (35, 569789), (55, 362593), (77, 258995), (85, 234619), (119, 167585), (121, 164815), (187, 106645), (277, 71995), (385, 51799), (595, 33517), (605, 32963), (847, 23545), (935, 21329), (1309, 15235), (1385, 14399), (1939, 10285), (2057, 9695), (3047, 6545), (4235, 4709)]