19994475

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 35212032

約数和(自身を除く): 15217557

約数列:

[1, 3, 5, 15, 23, 25, 67, 69, 75, 115, 173, 201, 335, 345, 519, 575, 865, 1005, 1541, 1675, 1725, 2595, 3979, 4325, 4623, 5025, 7705, 11591, 11937, 12975, 19895, 23115, 34773, 38525, 57955, 59685, 99475, 115575, 173865, 266593, 289775, 298425, 799779, 869325, 1332965, 3998895, 6664825, 19994475]

約数ペア:

[(1, 19994475), (3, 6664825), (5, 3998895), (15, 1332965), (23, 869325), (25, 799779), (67, 298425), (69, 289775), (75, 266593), (115, 173865), (173, 115575), (201, 99475), (335, 59685), (345, 57955), (519, 38525), (575, 34773), (865, 23115), (1005, 19895), (1541, 12975), (1675, 11937), (1725, 11591), (2595, 7705), (3979, 5025), (4325, 4623)]